issues regarding unjust enrichment claim in [49]
69 While the respondents refer to [48] in their written submissions, the unjust enrichment claim is in fact pleaded in [49].
70 By [49.1], the applicants plead that:
By the actions and conduct of the First and Second Respondent, the Respondents have obtained unjust enrichment from the Applicants, causing the Applicants to suffer loss and damage.
71 One particular provided in [49.1.1] is that the third respondents obtained unjust enrichment by having obtained sheep worth $600,000 at a cost of $60,000, causing the applicants to suffer loss and damage.
72 Further particulars refer to the first and second respondents having acted unconscionably to deprive the applicants of their only income producing asset, being the sheep, and further that the first respondent knowingly and with intent manufactured an atmosphere of crisis to persuade the applicants to agree to the terms of the collateral contract, causing the applicants to suffer loss and damage.
73 To establish a claim to restitution for unjust enrichment, an applicant must establish:
(1) That a benefit was obtained by the respondent;
(2) That the benefit was obtained by the respondent at the applicant's expense and not at the expense of some other person; and
(3) That there would be "injustice" (according to recognised circumstances developed in the cases) if the respondent were to receive (or retain) the benefit.
74 In [49.1.1], the first and second elements are pleaded by the applicants.
75 However, the respondents submit that the third element has not been pleaded. They say the unjust enrichment claim is misconceived as the fact that a party has received some benefit at the expense of another does not automatically mean that the party receiving the benefit has been unjustly enriched. Rather, the benefit must be received by the party under certain circumstances recognised by the law. Those circumstances have not been identified.
76 The circumstances in which "injustice" may be established include:
Mistake: Australian and New Zealand Banking Group Ltd v Westpac Banking Corporation (1988) 164 CLR 662;
Compulsion: Bryson v Bryant (1992) 29 NSWLR 188 at 223 (Sheller JA);
Other "vitiating" factors (such as illegality: David Securities Pty Ltd v Commonwealth Bank of Australia (1992) 175 CLR 353 at 379 (Mason CJ, Deane, Toohey, Gaudron, McHugh JJ));
Total failure of consideration: Baltic Shipping Co v Dillon (1993) 176 CLR 344 at 375 (Deane and Dawson JJ);
Failure of condition: Roxborough v Rothmans of Pall Mall Australia Ltd [2001] HCA 68; (2001) 208 CLR 516;
Partial failure of consideration in certain circumstances (in relation to a severable payment, if the failure relates to the whole of the agreed return for the payment; under certain statutes; or in relation to a payment the agreed return for which has failed merely partially); and
Acceptance of benefit: Brenner v First Artists' Management Pty Ltd [1993] 2 VR 221.
77 I agree with the respondents' submission that the applicants have not specifically pleaded what the "injustice" would be if the third respondent was to retain the sheep valued at $600,000, having paid only $60,000 for them. In this respect [49] is defective.
78 However, it may be that there are relevant facts which provide a basis for pleading the required "injustice", either already within the substituted statement of claim or not yet pleaded at all. As such, at this point I am not prepared to permanently strike out the applicants' unjust enrichment claim.
79 I would, however, uphold the objection to [49] but grant leave to the applicants to replead the paragraph.