austlii:nsw/NSWPIC/2026/50
General information, not legal advice.
NSWPIC
2026-01-28
Original judgment source is linked above.
WORKERS COMPENSATION - Workers Compensation Act 1987 (1987 Act); Workplace Injury Management and Workers Compensation Act 1998 (1998 Act); subject matter of decision; claim for weekly compensation; medical expenses and lump sum compensation by a worker alleging a disease injury; applicant diagnosed with bipolar mood disorder; injury disputed by respondent; Held - applicant suffered from an aggravation of a disease within the meaning of section 4(b)(ii) of the 1987 Act; referred to Medical Assessor for assessment of whole person impairment.
(a) Application to Resolve a Dispute and attached documents;
(b) respondent's amended reply and attached documents filed 18 June 2025;
(c) respondent's Application to Lodge Additional Documents dated 15 August 2025;
(d) respondent's Application to Lodge Additional Documents dated 21 October 2025;
(e) applicant's Application to Lodge Additional Documents dated 24 November 2025, and
(f) a copy of this Certificate of Determination and attached reasons.
A brief statement is attached setting out the Commission's reasons for the determination.
"The Applicant instructs that during the course of his employment he was bullied and harassed on multiple occasions. As a result, the Applicant has been diagnosed with a psychological injury of Bipolar Mood Disorder with psychotic symptoms with a deemed date of injury of 8 May 2020. The Applicant reports that his employer placed immense pressure on him, and he was working long hours and as a result was under a lot of stress. Further, he reports bullying by colleagues where in one instance, a colleague spread rumours about everyone hating the Applicant and made false allegations against him. This has resulted in our client's incapacity to return to work."[1]
(a) having commenced work with the respondent in June 2017;
(b) not having any pre-existing psychological injuries prior to working for the respondent;
(c) having no history or admission to hospital for illicit drug use or dependency;
(d) having had no problems performing his work duties prior to his alleged injury;
(e) that in October 2018 the respondent introduced a change in policy (presumably for security reasons) whereby security guards were required to satisfy a baseline security clearance to continue to work at Microsoft Data Centres;
(f) as a result of the new security requirements a staff shortage developed as many of the existing guards failed to satisfy the new requirements;
(g) as a consequence of the reduction in staff numbers all full time guards were required to work increased hours (with the applicant asserting that all the guards were required to work 122.5 hours per fortnight);
(h) the applicant asserts that the extra work resulted in a great degree of stress;
(i) as a result of the alleged stress of the extra work having developed paranoia and stress resulting in his hospitalisation on 12 October 2018;
(j) the applicant alleges that he was able to return to work on 15 October 2018;
(k) the applicant further alleges that he continued to work long hours where he was subject to being bullied;
(l) that by November 2019 he noticed that his mental health had deteriorated which was noted as such by others with whom he worked;
(m) on 27 November 2019 the applicant was conducting his first supervisory handover when he was denied the site phone's password, the Wi-Fi password and the site's laptop password by a person identified as Peter Mac;
(n) that on 11 December 2019 he was advised by Peter Mac that a person identified as Benjamin Sewak had been advising others that everyone hated the applicant coming into work late and intoxicated;
(o) on 18 December 2019 the applicant had a conversation with Benjamin Sewak about the allegations made by Peter Mac and was advised by Mr Sewak that no such statement had been made by him which resulted in the applicant feeling confused and that he could not trust anybody;
(p) on 19 November 2019 there was a dispute between the applicant and a supervisor, a Mr Saif Abu-Khadir, with Mr Abu-Khadir alleging that the applicant threw a piece of paper at him;
(q) that a conversation took place on or about 20 December 2019 between the applicant and a person identified as Ghazi Merhab who told the applicant that from then on he would be managed by management and not site leads or supervisors and further that the applicant would be shortly moved to a different site being a "grade 2 security site" where he would be happier.
(r) that on 24 December 2019 he participated in a meeting with a Tania Bateman and an Adam Dimitri where he raised concerns about being bullied harassed and isolated by his colleagues and supervisors;
(s) that he was finally given the Wi-Fi password on 1 January 2020 after asking for same for five weeks and that on the same date he was spoken to by Darren Archer about 30 minute break rotations (it appears that the applicant was concerned by the fact that he was given 30 minute breaks while another employee allegedly had been allowed to take one hour breaks);
(t) on 20 February 2020 he was working on a shift and when relieving a Sanjay Kumar, Mr Kumar advised the applicant that he, Mr Kumar, had been approached by another security guard, Darren Archer, to sign a petition to get the applicant removed from the site. Mr Kumar stated that he had been approached by Mr Archer on 17 December 2020. When asked about the existence of the petition Mr Philip Mac, the applicant's supervisor on the shift on 20 February 2020 denied knowing about same;
(u) having a conversation with his supervisor Darren Archer on 7 March 2020 where Mr Archer spoke to the applicant about transferring the applicant to another site but that being an unlikely event as the other guards at that site ( identified as Syd03) did not want the applicant there, and when challenged by the applicant on the issue Mr Archer had responded describing the applicant as "an idiot and delirious" and a "paranoid employee". The conversation allegedly then involved the applicant threatening to record the conversation, Mr Archer accusing the applicant of not being a team player and that he would like the applicant to "fuck off from Syd27";
(v) having been bullied since 2018;
(w) having been passed over for promotion on around 15 occasions when other employees, who were employed for shorter periods, became supervisors ahead of him;
(x) in particular the applicant having what may be described as a stressful relationship with Saif Abu-Khadir who was initially trained by the applicant and later became the applicant's supervisor. The applicant alleges that Mr Abu-Khadir constantly belittled and swore at the applicant, recorded security breaches or events requiring documentation identified by the applicant on Mr Abu-Khadir's "S.A.R." sheet rather that the applicant's sheet, and required the applicant to have earphones off during shifts even during down time hours amongst other issues;
(y) that he reported the bullying he received from Mr Abu-Khadir to management and nothing was done;
(z) he was paid considerably less than other employees that he was responsible for supervising;
(aa) he was transferred from site to site (albeit without stating when and how often the transfers occurred);
(bb) by May 2020 he was hospitalised at the Nepean Psychiatric Ward for his psychological injury, and
(cc) he resigned his employment with the respondent on 18 May 2020 while under the influence of his medications.
26 January 2023 and was discharged on 2 February 2023 when he was treated for mental health issues[6]. 9. The applicant states that he did however commence studying law at the University of Notre Dame at some point after January 2023 but states that he discontinued those studies because of problems with concentration and focus and also as a consequence of anxiety he experienced around new people. 10. The applicant asserts that since ceasing his studies with Notre Dame University he has not been able to pursue further studies or employment. 11. In yet a further statement dated 24 April 2024 but signed on 1 May 2024 the applicant states that on 24 March 2024 he travelled to Adelaide following the death of his uncle in South Sudan to visit his uncle's wife and children and then travelled to South Sudan, returning to Australia in late April 2024. 12. The applicant gave notice of injury by way of a Workers Compensation Claim form dated 22 July 2020.[7] 13. Attached to the Workers Compensation Claim form were medical certificates from a Dr Nazeen Hasan which referred to a diagnosis of an adjustment disorder with anxious and depressed mood. 14. From the material before me it appears that the respondent accepted provisional liability and commenced payment of workers compensation benefits while undertaking investigation of the applicant's claim and arranging for a medical examination of the applicant. 15. The respondent subsequently issued a notice under s 78 of the Workplace Injury Management and Workers Compensation Act 1998 (the 1998 Act) dated 5 July 2021 (s 78 notice)[8] denying liability on the basis that the applicant had not suffered an injury withing the meaning of s 4 of the Workers Compensation Act 1987 (the 1987 Act), that employment was not a substantial contributing factor to the applicant's alleged injury within the meaning of s 9A of the 1987 Act and that accordingly there was no liability for weekly payments or payment of medical and related expenses as any incapacity or need for medical treatment had not resulted from an injury as required by ss 33,59 and 60 of the 1987 Act. 16. More specifically the s 78 notice asserted:
"We are not satisfied that the events you allege to have caused a psychological injury were real events".[9]
"Further, we arranged for you to be examined by Psychiatrist and Independent Medical Examiner, Dr Tanveer Ahmed. In reports dated 21 December 2020 and 9 June 2021, the doctor opined that you suffer a much more serious illness than adjustment disorder and that you may have an underlying diagnosis of schizophrenia or a psychotic depression. Dr Ahmed stated that it is unlikely that employment was the substantial contributing factor to your condition. The doctor stated that you have marked underlying vulnerabilities and a strong family history and it was more likely that you were declining due to personal circumstances and loss.
Clinical notes of Blacktown City Mental Health Service indicate that you have experienced psychotic symptoms in the past in approximately 2008. This is consistent with Dr Ahmed's opinion of an underlying condition or vulnerability."[10]
"Dr Ahmed reported that psychiatric diagnoses often become clearer over time and at the time of his recent assessment, he was confident your diagnosis satisfied that of bipolar disorder.
While it was accepted by Dr Ahmed that you suffered a psychiatric illness, he did not support any causal connection between your condition and your employment."[12]
"Further, even if you are found to have sustained a compensable psychological injury (which is denied), Dr Ahmed made an assessment of impairment that fell below the required threshold under section 65A of the 1987 Act."[13]
(a) whether the applicant suffered a psychological injury arising out of or in the course of his employment to which his employment was the main contributing factor within the meaning of s 4(b) of the 1987 Act;
(b) if the applicant suffered a psychological injury whether the applicant has an entitlement to payment of weekly compensation benefits as a consequence of incapacity resulting from such injury and if so to what extent and in respect of which periods;
(c) if the applicant suffered a psychological injury whether he suffers from a whole person impairment as a consequence of that injury and if so to what extent, and
(d) if the applicant does suffer from whole person impairment as a consequence of a psychological injury is that impairment of sufficient degree to give rise to an entitlement to lump sum compensation and if so in what amount.
(a) the Application;
(b) respondent's Reply and attached documents (Reply);
(c) respondent's amended Reply and attached documents filed 18 June 2025 (amended Reply);
(d) respondent's wages schedule dated 8 July 2025 (respondent's wages schedule);
(e) respondent's Application to Lodge Additional Documents dated 15 August 2025 (ALAD 1);
(f) respondent's Application to Lodge Additional Documents dated 21October 2025 (ALAD 2);
(g) applicant's Application to Lodge Additional Documents dated 24 November 2025 (ALAD 3), and
(h) respondent's second wages schedule dated 10 December 2025 (respondent's wages schedule 2).
"...not satisfied with the events you allege to have caused a psychological injury were real events."
"He worked as a security guard for PGSA since 2017. He reported that he was working long hours, from 40-60 hours a week. He had worked at Macquarie Park for two years. He was posted to different locations, and he worked at Eastern Creek from 2019 to January 2020. He stated there was high turnover of staff all the time and there were work pressures and impartial treatment.
He had to work in a 'hot environment' and wear ear masks because of the loud noise. Mr Deng noticed that new staff were promoted over him. He was working for a few years and was never offered a promotion and hence approached his manager what he needed to do to get a promotion. He reported that following this, his manager started to micromanage and target him developing a dislike towards him. He was transferred to Eastern Creek. He said that his supervisor, Saif, yelled at him and belittled him, humiliated him, and criticised him. He felt unwelcomed and raised his grievances to management and HR. There was a mediation meeting at the head office in November 2019 with the regional manager where his grievances were dismissed and he was blamed for short comings as his manager denied any of grievances he had raised. This led to more micromanagement and in January 2020, he was refused the Wi-Fi password. He felt humiliated, trapped with anxiety, helpless and his self-worth plummeted working in hostile work environment.
In May 2020, he developed a psychotic episode where he felt paranoid, watched, and had referential ideation with thought disorder and impaired judgement. This culminated into hospital admission at Nepean Hospital Psychiatric Unit for two days. He was diagnosed with a Bipolar Type 2 Disorder.
He handed his resignation on 8 May 2020. He recalled that he was experiencing paranoid delusions. He felt that everyone was against him, even his family. He was treated with antipsychotic medication, Olanzapine, which was not helpful. He neglected to care for himself, he was showering and brushing his teeth only weekly. He lost interest and motivation in his usual activities.
He had another admission to Nepean Hospital with Bipolar Type 2 disorder and treated with Invega depot and Valproate. He reported psychotic symptoms with disorientation to reality, illusive thoughts, referential thoughts, and persecutory delusions that were sudden onset in June 2020. He believed his family was after him and he had issues of trust. He was admitted involuntary on first two occasions. He was on Seroquel, but his symptoms were not remitted. He felt lethargic and felt depressed and had Lexapro and this triggered manic episode. He had relapse and admitted to hospital. He had his third admission on voluntary basis in 2021 and he was on medications at that time. He reported suicidal thoughts and commenced on Invega depot and was on CTO indicating history of noncompliance. The CTO lapsed in 2022 and he stopped medications on volition. He stated that over the last six months he denied any psychotic symptoms or mood disorder. He stated that medications made him a zombie and hence he stopped it."[17]
"Mr Deng has no past history of psychiatric illness.
He stated he had a DUI in January 2020 but denied any history of current alcohol abuse and minimised his alcohol abuse. He has been on alcohol interlock programme. He denied history of any other recreational drug abuse.
He is the third of six children. His father worked as a teacher's aide, and for the United Nations. His mother has been working as an aged care worker. He had lived in a refugee camp for five years prior to coming to Australia. He migrated from Sudan with his family when he was six years old.
There is family history of alcohol abuse in his father."[18]
"Bipolar Type 2 disorder with psychotic features in partial remission.
He is vulnerable and still has mild paranoid ideation and fears.
His employment is the main contributing factor to his psychological injury. The psychological barriers have led to poor functional outcomes and vocational impediments. He has reached maximum medical improvement given intensive pharmacotherapy."[19]
"His employment was a substantial contributing factor to your client's psychological injuries and the main contributing factor to the aggravation and deterioration."[20]
"He initiated EC claim in may 2020 and accepted in August 2020 and liability accepted till July 2021 and denied foillwing report for Dr amed. He worerkd for Pgsa, security company but working at Microsoft datt centre form 2017 till 2020. during that time he suffereddsicrimation and his pormortion wa simpeded and obstructed despite his hard work he felt micromanaged, controlled in 2019 and this led to sever and insomnia. he resigend in may 2020 and was using methampethamien and this culminating into psychotic episode."[23]
"Believes he is being discriminated against at his workplace (works as a security guard) and workers staring at him."[29]
"First onset of depressive symptoms last year Nov 2019
since beginning of 2019, feels being bullied at work, racism felt reportedly
he has been in the security job role for quite sometime with his employer over the last 2 years
some new employees joined after him around 13 of them and they were promoted to higher jobs on different occasions
he was not promoted and he asked his supervisor and management regarding this
his management reportedly tried to make his job at workplace more difficult for him
he reckons they did this so that he could quit his job
they relocated his job at a remote workplace to a very isolated site
he had to do 12 hour shifts at this place, night shifts mostly
he tried to accustom to this workplace for about 3 months between Nov 2019 to Jan 2020
he started to feel very stressed about his work, future and arrangements by his employer at that time
he used to reportedly cope with everything by socializing with friends/family and going to the gym during his days off in the week
when covid pandemic began, he found himself more isolated, no option to socialize or go to the gym
he felt he was having low mood, overwhelming anxiety and depressive feelings over all these months
one morning he woke up from his sleep and saw snapchat messages from 3 years ago
he felt like covid has been happening for last 3 years
he further felt paranoid against his family members and thinking his own mum is fake
his brothers were at home at that time not working, he felt his family was making him work deliberately and had persecutory feelings against them
he was aggressive towards his brothers and they called the police at his home
police called the ambulance to take him to hospital for a mental health assessment
around this time he went to his GP, his GP commenced him on Lexapro for depression
he had been taking Lexapro when he went to Nepean TAC for a psych assessment
he was advised to cease Lexapro and commence olanzapine
he felt quite energetic, elated, felt like he was Jesus Christ, he was overspending out of character and was being very impulsive, having erratic thoughts
he felt this was induced by both Lexapro and olanzapine
he stopped taking both these tablets after a week of presenting to Nepean
he took sertraline from about 18 May and started to feel 'better and back to normal'
he increased the dose to 100mg by himself after researching on the internet
then he was worried about long term side effects and decreased libido, hence continued only 50mg mane daily thereafter
he has not taken any olanzapine or Lexapro since the last 3 weeks
he now feels completely back to normal."[30]
"Mr Deng is a 31 year old security guard living with his mother and four siblings in Ropes Crossing.
He had worked at Macquarie Park for two years. He was posted to different locations, and he worked at Eastern Creek from 2019 to January 2020.
He reported that he was working long hours, from 40-60 hours a week, from 2017 to 2019. He had to work in a 'hot environment' and wear ear masks because of the loud noise. He said there was a high turnover of staff.
Mr Deng noticed that new staff were promoted over him. He had asked his manager what he needed to do to get a promotion.
He reported that following his enquiry, the manager started to micromanage him. The manager constantly checked on him and tested him. He said that the manager made his life 'difficult'.
He was transferred to Eastern Creek. He said that his supervisor, Saif, yelled at him and belittled him. He was unfairly criticized.
He had complained to management. He said that there was a conciliation meeting at the head office in November 2019, involving the regional manager. He said that all his complaints were dismissed - he was made to feel he was making things up. He said that the issues were not resolved. He said that Saif denied everything, and the micromanagement got worse.
In January 2020, he was refused the WiFi password. He was unfairly treated and he felt that he was victimized.
In May 2020, he developed a 'stress-induced psychosis'. His thinking process and perception were altered. He was hosptialized at the Nepean Hospital Psychiatric Unit for two days. He was told that he was suffering from a Bipolar Type 2 Disorder.
He handed his resignation on 8 May 2020."[36]
"Mr Deng has no past history of psychiatric illness.
He migrated from Sudan with his family when he was six years old. He is the third of six children.
His father worked as a teacher's aide, and for the United Nations. His mother has been working as an aged care worker.
He had lived in a refugee camp for five years prior to coming to Australia. There is no family history of psychiatric illness.
He admitted that from May 2020 to October 2020, he was drinking and smoking heavily."[37]
"His condition is caused by bullying, harassment, and unfair treatment with his employment as a security officer".[39]
"Can you please confirm your opinion as to whether our client's workplace was a substantial contributing factor to our client's psychological injuries; or the main contributing factor to the aggravation, deterioration, acceleration or exacerbation of a pre-existing condition; Please explain."[44]
"It is my opinion that Mr Deng's workplace is a substantial contributing factor to his psychiatric diagnosis of a Bipolar Mood Disorder.
He had an acute episode in 2018, related to his work-related stress, and subsequent relapse in 2020.
Mr Deng has vulnerability factors. It is my opinion that his work-related stress has aggravated his psychiatric condition."[45]
"Your opinion on Dr Ahmed's reports dated 21 December 2020, 9 June 2021 and 9 December 2022 and his comment on diagnosis and causation."[46]
"I have read the reports prepared by Dr Tanveer Ahmed.
I agree with Dr Ahmed that Mr Deng has 'marked underlying vulnerabilities and a strong family history. The history of his parent's [sic] separation, father's death, and drug induced psychosis are contributing factors to his psychiatric condition.
I believe that his work-related stress has aggravated his psychiatric condition.
It is likely that he was feeling mentally unwell at work due to his mood disorder, and psychosis. However, his report of working long hours in a stressful environment, and the lack of support by management, have aggravated his psychiatric condition."[47]
"Mr Deng is a 29 year old single man living with his family which include a mother and four siblings. His father died a few years ago after he moved back to Sudan. The parents separated approximately four years ago. Mr Deng had never married and had no children. He had not worked since March 2019.
This was his account, although from the insurer's correspondence, it said he resigned in May 2020.
The client worked for Securitas, which is a security firm. He had been in the job for three years. He said he had worked full time. He said his job was usually at data centres at Eastern Creek and at Macquarie Park. He said he usually sat on the desk and often dealt with IT technicians requiring services.
When asked about his difficulties, he said he felt discriminated against regarding promotion. He also remembers an incident where colleagues were talking about black women which he attributed as discriminatory.
I note from the correspondence that he was unable to provide any documentation regarding his complaints, he was offered mediation and did not attend.
The correspondence from Nepean Hospital in May 2020 states that he felt discriminated against because other workers were staring at him. The assessment also notes ideas of preference and persecution.
The claimant was placed on psychotropic medications including a mood stabiliser and anti-psychotics. He was on a different antipsychotic Olanzapine and that has since been changed to Aripiprazole. There was also a prior presentation at Westmead in 2018 having presented with drug-induced psychosis, having used ecstasy.
Other history includes that he was getting increasingly interested in religion. He says his parents are Christian. At the time of his admission to Nepean he was reading widely, including the Quran and the Bible. He also stated that COVID was a conspiracy created by the government.
He is currently closely involved with the local community health service and case-managed.
He spent his time often sleeping. He ruminated about past work events. He says he feels flattened by the medication. He is struggling with motivation.
Other important history also includes his father being diagnosed with mental illness, I am not entirely sure what this was, but it may have been a psychotic illness.
He also lost his licence in January this year after a driving under the influence charge."[48]
"The claimant was born in South Sudan. His father was also a security guard but a teacher in Sudan. Mr Akoy spent much of his early life in a refugee camp in Kenya. He was the second oldest child of 4. The family migrated to Australia when he was 6. They lived in Adelaide for several years before coming to Sydney. He reported an unremarkable schooling. He was able to complete year 12. He said he was good at history. He used to play basketball with his friends but has not for a couple of years. He says he has a handful of good friends usually of African origin, primarily Sudanese or Nigerian. He noted the Nigerians were a little bit different because they had not gone through civil war. He said they tended to be more relaxed and comfortable.
Other important history included a drug and alcohol history where he had occasionally used ecstasy in past years. He denied problems with alcohol but says he has a few drinks from time to time. I note the DUI charge, already mentioned.
He denies any other medical problems but notes he had grommets in his ears taken out several years ago."[49]
"Mr Deng suffers a much more serious illness than Adjustment Disorder. He may have an underlying diagnosis of schizophrenia or a psychotic depression. This is related in the correspondence from the public hospital. He also has a prior presentation of drug-induced psychosis in 2018."[50]
"It is unlikely that employment is a substantial contributing factor. Mr Deng has marked underlying vulnerabilities and a strong family history. It was more likely that he was declining after his parents' separation, further worsened by his father's death in Sudan. Thereafter he became increasingly paranoid about co-workers, which is a contributor to his perceptions of discrimination."[51]
"It is reasonable to consider his diagnosis to be either bipolar disorder or possibly a schizoaffective disorder. He does have a history of marked psychotic symptoms to the point where he required depot injections and a community treatment order. This is consistent with a bipolar disorder where manic psychosis is a feature. It may also be part of a schizoaffective illness. It is now largely treated, and he has stabilised.
He does indeed have a psychological disorder, although it has considerably stabilized.
I note in the past the most likely diagnosis was a schizophrenia-like illness. This also coincided with a period when he was using drugs sporadically and was clearly tied to a public community health facility.
He was much more unstable during this period and has since stabilised. Psychiatric diagnoses often become clearer over a period of time, and I am largely comfortable that there is a reasonable likelihood that he satisfies the criteria for a bipolar disorder".[58]
26 March 2024, 24 April 2024, 29 May 2024, 16 September 2024 and 16 April 2025. 2. The relevant parts of the chronology of events set out in those statements is summarised or referred to earlier in these reasons. 3. As I have noted earlier when referring the medical evidence in the matter much of the statement evidence of the applicant is inaccurate (for instance in relation to the cause of the psychotic episode in October 2018) or omits relevant history (such as the applicant's history of depression, attempted suicide as a child and self-harming behaviours). 4. I have significant reservations as to the credibility of the applicant's evidence as a consequence of those inaccuracies or omissions and will give appropriate weight to that evidence as a consequence. 5. Attached to the amended reply is a statement signed by the Applicant dated
24 December 2019 that records a number of events of some relevance which may be noted as follows: * the applicant had difficulty working with a Jeff Melvin because Mr Melvin was very controlling. Mr Melvin had apparently started work with the respondent in early 2019; * he had an incident of conflict with a Jonathon Cutjar; * he describes difficulties working with Saif Abu Khabar [sic] (I believe he is referring to Saif Abu Khadir), and * he was unhappy about not being promoted to supervisor.[60] 6. Attached to the Amended reply is also a copy of a letter dated 6 May 2020 sent by the applicant to Thea Emetlis (apparently the senior vice president of Human Resources (HR) at the respondent) which in a lengthy document providing details about what is described as bullying and mistreatment at the site described as Syd27 which occurred from November 2019 on. 7. Given the date of the letter (immediately coincident with the applicant requiring hospitalisation) I give it limited weight however a number of complaints are recorded that are repeated in other documentation including: * the applicant not being given passwords to laptops and Wi-Fi; * the applicant's work chair not being adjusted; * the applicant being only given 30 minute meal breaks; * an incident of conflict with Darren Archer, and * lack of promotion to supervisory shifts.[61] 8. Also attached to the Amended reply is a further letter from the applicant to Penny Parker and Alex Grayson dated 29 June 2020[62] which in my view does not greatly assist the matter further with many of the complaints made in other statements and histories being re-visited at a time when the applicant had ceased work and commenced treatment almost eight weeks later 9. The applicant also relies upon the statement evidence of a number of witnesses. 10. His sibling Chol Deng has provided a statement dated 20 March 2024 which confirms a deterioration in the applicant's mental health and having been made aware by the applicant of what was claimed to be bullying at work being overlooked for promotion, and to not being provided with the site WIFI password. Mr Chol Deng also referred to being aware from his own experience of Mr Jeff Melvin instituting a policy at work preventing family members working on the same shift which both the applicant and Chol Deng regarding as bullying.[63] 11. The applicant's mother Awaak Gak Akoy has provided a statement dated 12 March 2024 which sets out a history of the applicant's mental health having declined in the months leading up to May 2020.[64] The witness states that prior to then (May 2020 and the months leading up) he exhibited good mental health which is clearly incorrect given the other evidence before me. Nonetheless the witness does confirm a deterioration in the period immediately prior to May 2020. 12. Awaak Gak Akoy provided a further statement dated 25 April 2025 (but apparently signed on 28 April 2025). 13. In that statement Ms Akoy asserted (inter alia) that: * before October 2018 she had not noticed any issues with the applicant's mental health; * he had a good childhood and did not have any pre-existing mental health issues as a child or teenager; * he did not experience any trauma as a child; * he had not seen or experienced any struggles as a child in Kenya; * when they moved from Adelaide to Sydney he adjusted quickly and made new friends at his primary and secondary schools; * that the applicant was extremely stressed from his work from November 2018; * that she suggested to the applicant in November 2019 that he leave his job with the respondent; * that he informed her in November 2018 that he was being targeted in the workplace, and * that he was first hospitalised in May 2018 for a severe psychotic episode due to a work related injury.[65] 14. Given the contents of the applicant's own hand-written statement and the medical evidence referred to earlier it is clear that much of the content of Ms Akoy's statement dated 25 April 2025 is incorrect. 15. The applicant obviously had a traumatic childhood living in a refugee camp with limited food where he almost died on a number of occasions due to malnutrition, that his parents had to flee the first camp on foot, that the Kenyan refugee camp had terrible sanitation with food in short supply, that while there he was forced into a sexual act by another older boy, that he felt alienation from his peers at school in Adelaide, that his father was a "borderline alcoholic", he was involved in abuse of pet animals, that he was unhappy at secondary school, that he attempted suicide and self harmed amongst many examples of traumatic events.[66] 16. Further the evidence establishes that the admission to Westmead Hospital for a psychotic episode in October 2018 followed the use of a drug and was not the consequence of workplace stress. 17. The impression created by the content Ms Akoy's statement of 25 April 2025 is of someone trying to assist the applicant's case rather than someone providing an honest statement of events. I consider the statement to be of little or no weight because of its clearly partisan and inaccurate nature. 18. The applicant also relies upon a statement from a Teddy Doyle dated 4 June 2024 but apparently signed 3 June 2024. 19. Mr Doyle appears to be both a friend and work colleague of the applicant. 20. Mr Doyle states that he and the applicant were required to work long hours while waiting on their "baseline clearance" and were not told about the availability of hotel accommodation available to security staff. Mr Doyle confirms that the applicant did work extremely long hours on occasion, in a noisy environment and in high temperatures. Mr Doyle also says that the mental condition of the applicant appeared to suddenly deteriorate (unfortunately without stating when that occurred).[67] 21. The respondent has relied upon a number of witness statements from supervisors of the applicant some of which are referenced in the submissions of Mr Beran for the respondent. 22. Mr Darren Archer has provided a statement dated 20 March 2021 where he confirms that he was originally a co-worker with the applicant as a screening officer/guard but had become the applicant's supervisor in November 2019. 23. Mr Archer confirms that the applicant started working for the respondent before him and was apparently a somewhat difficult employee who, in Mr Archer's view was transferred from site to site when matters became too difficult.[68] 24. Mr Archer confirms that the applicant was not given a Wi-Fi password when he commenced work at the site identified as Syd27 but that nobody other than supervisors were supposed to have same as it prevented workers getting online/social media while on shifts. 25. Mr Archer also confirms that the applicant received 30 minute breaks but that arrangement applied to all screening officers. 26. Mr Archer states that the applicant had issues with Site Leaders at all sites where he worked and that once Mr Archer was promoted to a position as a Site Leader the applicant became rude and dismissive towards him. 27. Mr Archer describes the applicant as:
"...quite paranoid and thinks everyone is out to get him; he tries to make it is a racist issue but none of the issues he has had with any employee have been race related; it is all about his own behaviour and conduct."[69]
"No one wanted to work with him at the sites because they knew how he was; you could tell he had mental issues; his thought processes and outlook on things was not normal."[71]
"The only concern was why he wasn't promoted to a Supervisor; he spoke to me one day when I was doing a day shift at Syd27 as a supervisor. I told him personally I would not recommend him to be a shift supervisor because he was always late or he would drop shifts at a last minute and I told him that."[73]
"...always complaining about so many things, he could not work with any Supervisor".[74]
"He was always the same; like he had multiple personalities; he would be happy one day and really nice and sometimes aggressive another day."[75]
"Everyone I know who worked with Akoy, even at other sites had an issue working with him. He was always complaining about something and he was often late for his shift and he is someone who would get easily offended. You could not talk to him."[76]
(i) a disease that is contracted by a worker in the course of employment but only if the employment was the main contributing factor to contracting the disease, and
(ii) the aggravation, acceleration, exacerbation or deterioration in the course of employment of any disease, but only if the employment was the main contributing factor to the aggravation, acceleration, exacerbation or deterioration of the disease."
"Your opinion as to whether our client's employment was a substantial contributing factor to our client's psychological injuries, or the main contributing factor to the aggravation, deterioration, acceleration, and/or exacerbation of our client's psychological injuries?"[79]
"Can you please confirm your opinion as to whether our client's workplace was a substantial contributing factor to our client's psychological injuries; or the main contributing factor to the aggravation, deterioration, acceleration and/or exacerbation of a pre-existing condition;"[80]
"It is my opinion that Mr Deng's workplace is a substantial contributing factor to his psychiatric diagnosis of a Bipolar Mood Disorder.
He had an acute episode in 2018, related to his work-related stress, and subsequent relapse in 2020.
Mr Deng has vulnerability factors. It is my opinion that his work related stress has aggravated his psychiatric condition."[81]
"I agree with Dr Ahmed that Mr Deng has 'marked underlying vulnerabilities and a strong family history'. The history of his parent's separation, father's death, and drug induced psychosis are contributing factors to his psychiatric condition.
I believe that his work-related stress has aggravated his psychiatric condition.
It is likely that he was feeling mentally unwell at work due to his mood disorder, and psychosis. However, his report of working long hours in a stressful environment, and the lack of support by management, have aggravated his psychiatric condition."[85]
"That a doctor does not address the ultimate legal question to be decided is not fatal (Guthrie v Spence [2009] NSWCA 369; 78 NSWLR 225 AT [194] to [199] and [203]). In the Commission an Arbitrator must determine, having regard to the whole of the evidence, the issue of injury, and whether employment is the main contributing factor to the injury."[87]
Accordingly I have considered the whole of the evidence in coming to my finding that on the balance of probabilities the applicant's employment was the main contributing factor to the aggravation or deterioration of the applicant's bipolar disorder.
[3] Amended reply pp 237-336 (it is to be noted that the actual numeration of the documents in the original Reply was incorrect and the reference numbers used in this decision are those shown in the attachments to the Application to Lodge Additional Documents filed by the respondent dated 18 June 2025 attaching the Amended Reply and its attached and renumbered documents and this approach will be adopted whenever referencing documents that may have been attached to the Reply).
[16] See Jaffarie v Quality Castings Pty Ltd [2014] NSWWCCPD 79.
[86] Per Burke CCJ in Cant v The Catholic School's Office [2000] 20NSWCCR 88.
[87] Per Roche DP in State Transit Authority of New South Wales v El Achi [2015] NSWWCCPD 71 at [72].
Deng
PSGA Pty Ltd [2026] NSWPIC 50;