The principle of ‘Emotional Dependence’ was established in the following cases:-
a) Commercial Bank of Australia Limited v Amadio (1983) 151 CLR 447,
b) Yerkey v Jones (1940) 63 CLR 649; and
c) Garcia v National Australia Bank Ltd  HCA 48; 6 CCL 81; 194 CLR 395; 155 ALR 614; 72 ALJR 1243 (6 August 1998)
In Amadio a guarantee for a loan was provided by parents to their son. The son failed to explain to the Amadio’s what the document was in detail. He failed to advise his parents of the risks and obligations associated with being guarantors. The Amadio’s spoke little to no English and were uneducated as to the legality and understanding of the documents. In this situation, the guarantee was set aside.
Amadio created the principles of unconscionable conduct.
In the case of Yerkey v Jones the husband asked his wife to sign a guarantee for a home loan. On the facts, although not pleaded, the husband may have been guilty of misrepresentation or undue influence insofar as putting his wife under pressure to sign the documents. It may even be suggested that the husband was simply insensitive to her lack of understanding of the implications of the transaction which she was being asked to execute. On dissolution of the marriage, the wife claimed that the significance of the transaction was not explained to her and she sought to be relieved from the consequences of the transaction. The High Court held that it certainly is possible for a wife to succeed in a case like this however on the facts of this case the court declined to set aside the transaction.
The more recent case of Garcia, built on and expanded the principles in Yerkey v Jones. Mrs Garcia had been asked to be a guarantor and co-mortgagor with Mr Garcia in respect of loans made to Mr Garcia for use in his business. After separating from her husband and having obtained dissolution of their marriage, Mrs Garcia sought a declaration to have the mortgage and guarantees declared void. The High Court held that the principle articulated by Dixon J in Yerkey v Jones could apply in the context of guarantees given by a party who was emotionally dependent on a spouse, and therefore placed trust and confidence in the spouse. As a result of such trust and confidence, the emotionally dependent party may have entered the guarantee, without having received a full explanation of the nature and consequences of entry into the transaction. If the bank did not take steps to fully explain the terms of the transaction to the emotionally dependent spouse, then the guarantee could be set aside. In order for the guarantee to be set aside, Gaudron, McHugh, Gummow and Hayne JJ (Kirby & Callinan JJ reached the same conclusion but for different reasons) indicated that 4 elements had to be made out (at ):
(a) in fact the Guarantor did not understand the purport and effect of the transaction;
(b) the transaction was voluntary (in the sense that the guarantor obtained no gain from the contract the performance of which was guaranteed);
(c) the lender is to be taken to have understood that, as a wife, the guarantor may repose trust and confidence in her husband in matters of business and therefore to have understood that the husband may not fully and accurately explain the purport and effect of the transaction to his wife; and yet
(d) the lender did not itself take steps to explain the transaction to the wife or find out that an independent third party had explained it to her.
If these elements are satisfied, then it will be unconscionable for the bank to enforce the guarantee. Note that the person giving the guarantee must not have obtained any benefit from the transaction.
Since Garcia there have been a number of decisions which have tested the boundaries of the ‘emotional dependence’ test. The following relationships have been found insufficient to attract the special equity:
- Brothers in law;
- Long Term Friendship;
- Parent-child Relationship (not falling within the unconscionable principles of Amadio).
The special equity has however been extended to marriage like de facto relationships.
What is clear from Garcia is that there is a presumption of undue influence arising from the relationship of trust and confidence inherent in a marital relationship. At this stage it appears that the special equity is only available if the guarantor is a female, in a sexual and emotional relationship analogous to marriage, where the male partner has received the benefit of the transaction. Any circumstances arising from the marital relationship which brings the signing of a guarantee into the realms of unconscionability is liable to be set aside.
The presumption of undue influence can be rebutted by the guarantor receiving independent legal advice. The burden of proof lies with the creditor to show informed consent through independent legal advice.
 (1940) 63 CLR 649
 National Australia Bank v Starbronze  VSC 325
 Equitiloan Securities Ltd v Mulrine  NSWSC 74
 Watt v State Bank of New South Wales  ACTCA 7.
 Liu v Adamson  NWSC 74.