Adverse findings as to credit - merits review -v- judicial review
14 Considerable caution must be exercised before too readily acceding to a proposition that adverse findings as to credit expose jurisdictional error.
15 Thus, for example, in Minister for Immigration and Citizenship v SZMDS [2010] HCA 16 at [96], (2010) 240 CLR 611 at 636 Crennan and Bell JJ cautioned against sanctioning the ground of judicial review asserting arbitrariness, illogicality or irrationality as a means of impermissibly achieving "merits review". The same degree of caution has also been expressed in respect to an argument that there has been a failure to give proper, genuine and realistic consideration to material being an impermissible invitation to effect "merits review" - and not "judicial review": e.g., Swift v SAS Trustee Corporation [2010] NSWCA 182 at [45], (2010) 6 ASTLR 339 at 351 per Basten JA (Allsop P agreeing); Roesner v Minister for Immigration and Border Protection [2015] FCAFC 132 at [36] per Allsop CJ, Flick and Griffiths JJ.
16 And, in the specific context of adverse findings as to credit, McHugh J in Re Minister for Immigration and Multicultural Affairs; Ex parte Durairajasingham [2000] HCA 1 at [67], (2000) 58 ALD 609 at 625 relevantly observed:
[67] In addition, the prosecutor alleges that the Tribunal breached s 430(1) by failing to set out reasons for its finding that the prosecutor's claim that members of PLOTE tried to recruit him were "utterly implausible". However, this was essentially a finding as to whether the prosecutor should be believed in his claim - a finding on credibility which is the function of the primary decision maker par excellence. If the primary decision maker has stated that he or she does not believe a particular witness, no detailed reasons need to be given as to why that particular witness was not believed. The Tribunal must give the reasons for its decision, not the sub-set of reasons why it accepted or rejected individual pieces of evidence. In any event, the reason for the disbelief is apparent in this case from the use of the word "implausible". The disbelief arose from the Tribunal's view that it was inherently unlikely that the events had occurred as alleged.
These observations - or, at least, such parts of these observations as refer to findings on credibility being "the function of the primary decision maker par excellence" - have oft been since cited: e.g., SZSBR v Minister for Immigration and Border Protection [2013] FCA 1208 at [9] per Farrell J; MZZSH v Minister for Immigration and Border Protection [2014] FCA 1292 at [20] per Murphy J; SZSFS v Minister for Immigration and Border Protection [2015] FCA 534 at [20] per Logan J. The comments of McHugh J as to the absence of any need to provide "detailed reasons", however, have not gone without notice: e.g., Twynam Agricultural Group Pty Ltd v Williams [2012] NSWCA 326 at [47] per Campbell JA (Allsop P and Beazley JA agreeing); SZSQY v Minister for Immigration and Border Protection [2013] FCA 1288 at [16] per Cowdroy J.
17 The difficulties confronting any party who seeks to upset findings founded upon an assessment of the credibility of witnesses cannot, accordingly, be under-estimated: e.g., Minister for Immigration and Citizenship v SZNPG [2010] FCAFC 51, (2010) 115 ALD 303.
18 And the circumstances in which findings of credit may be made are many. Cases may thus arise where adverse findings as to credibility are founded, either in part or in whole, upon an assessment as to oral evidence by reference to contemporaneous documents. Similarly, cases may arise where adverse findings as to credibility are founded, either in whole or in part, upon an assessment as to oral evidence by reference to other objective facts. Cause to question such findings may arise by reason of adverse findings as to credibility sitting inconsistently with such other objective evidence as is before a decision-maker which is supportive of the claims being advanced and which has been rejected.
19 The question as to the appropriate approach of a Court undertaking judicial review becomes even more acute, however, where the adverse findings as to credibility are founded simply upon an assessment as to whether:
a particular witness; and/or
the corroborative evidence of other witnesses
is to be believed or disbelieved.
20 Whatever may be the difficulties, however, adverse findings of fact founded upon credibility - like other findings of fact - may expose jurisdictional error. A finding of fact founded simply upon a conclusion that a witness is not to be believed is no more immune from judicial scrutiny than is any other finding of fact.
21 In an appropriate case findings of credibility by an administrative decision-maker may expose legal error.
22 Thus, for example, in Minister for Immigration and Citizenship v SZRKT [2013] FCA 317, (2013) 212 FCR 99 at 121, Robertson J also observed:
[78] It is not, in my opinion, the case that a finding in relation to credit may never found a conclusion of jurisdictional error, particularly where a finding on credit on an objectively minor matter of fact is the basis for a tribunal's rejection of the entirety of an applicant's evidence and the entirety of the applicant's claim.
The Refugee Review Tribunal in that case had found the claimant had been "untruthful", including in the account he had given as to his having studied Persian in Pakistan. The Tribunal, however, had failed to refer in the course of the hearing or in its reasons to a document from Punjab University corroborating the claimant's account. Notwithstanding the findings as to credit, the decision of the Tribunal was set aside. See also: MZYWL v Minister for Immigration, Multicultural Affairs and Citizenship [2013] FCA 895 at [24] per Bromberg J. Jurisdictional error may also be exposed where the Tribunal applies "a process of reasoning which damns a man's credibility by reference, materially, to a false factual premise concerning a critical document": SZLGP v Minister for Immigration and Citizenship [2009] FCA 1470 at [37], (2009) 181 FCR 113 at 126 per Logan J. Unwarranted assumptions by a Tribunal as to matters relevant to the formation of a view on the credibility of a corroborative witness may cause the Tribunal to disbelieve and disregard that evidence and may constitute a failure duly to consider the question raised by the material put before it: WAGO of 2002 v Minister for Immigration and Multicultural and Indigenous Affairs [2002] FCA 437 at [54], (2002) 194 ALR 676 at 685.
23 "Adverse findings as to credit by the Tribunal", as has previously been observed, "do not shield its decision-making processes from scrutiny": SZSHV v Minister for Immigration and Border Protection [2014] FCA 253 at [31] per Flick J. And the basis upon which the Tribunal has made adverse findings, including adverse findings as to credit, must be adequately explained: SZSRV v Minister for Immigration and Border Protection [2014] FCA 220 at [23], (2014) 142 ALD 219 at 223. A failure to set forth the basis upon which adverse credit findings are made may expose jurisdictional error.