There are many cases which come before the Fair Work Commission for a hearing where an agreement to settle the case is made and then one party seeks to withdraw from or recant the settlement; here is the legal context of the dilemma.
“Given the focus in this case on the High Court judgement in Masters v Cameron (1954) 91 CLR 353, it is useful to set out the relevant passages from the judgement. These are found at paras  to  which I set out below:
‘9. Where parties who have been in negotiation reach agreement upon terms of a contractual nature and also agree that the matter of their negotiation shall be dealt with by a formal contract, the case may belong to any of three cases. It may be one in which the parties have reached finality in arranging all the terms of their bargain and intend to be immediately bound to the performance of those terms, but at the same time propose to have the terms restated in a form which will be fuller or more precise but not different in effect. Or, secondly, it may be a case in which the parties have completely agreed upon all the terms of their bargain and intend no departure from or addition to that which their agreed terms express or imply, but nevertheless have made performance of one or more of the terms conditional upon the execution of a formal document. Or, thirdly, the case may be one in which the intention of the parties is not to make a concluded bargain at all, unless and until they execute a formal contract. (at p360)
- In each of the first two cases there is a binding contract: in the first case a contract binding the parties at once to perform the agreed terms whether the contemplated formal document comes into existence or not, and to join (if they have so agreed) in settling and executing the formal document; and in the second case a contract binding the parties to join in bringing the formal contract into existence and then to carry it into execution. Of these two cases the first is the more common. Throughout the decisions on this branch of the law the proposition is insisted upon which Lord Blackburn expressed in Rossiter v. Miller(1878) 3 App Cas 1124 when he said that the mere fact that the parties have expressly stipulated that there shall afterwards be a formal agreement prepared, embodying the terms, which shall be signed by the parties does not, by itself, show that they continue merely in negotiation. His Lordship proceeded: ” . . . as soon as the fact is established of the final mutual assent of the parties so that those who draw up the formal agreement have not the power to vary the terms already settled, I think the contract is completed” (1878) 3 App Cas, at p 1151 : see also Sinclair, Scott & Co. Ltd. v. Naughton HCA 34; (1929) 43 CLR 310, at p 317 . A case of the second class came before this Court in Niesmann v. Collingridge HCA 19; (1921) 29 CLR 177 where all the essential terms of a contract had been agreed upon, and the only reference to the execution of a further document was in the term as to price, which stipulated that payment should be made “on the signing of the contract”. Rich and Starke JJ. observed (1921) 29 CLR, at pp 184, 185 that this did not make the signing of a contract a condition of agreement, but made it a condition of the obligation to pay, and carried a necessary implication that each party would sign a contract in accordance with the terms of agreement. Their Honours, agreeing with Knox C.J., held that there was no difficulty in decreeing specific performance of the agreement, “and so compelling the performance of a stipulation of the agreement necessary to its carrying out and due completion” (1921) 29 CLR, at p 185 : see also O’Brien v. Dawson  HCA 8; (1942) 66 CLR 18, at p 31. (at p361)
- Cases of the third class are fundamentally different. They are cases in which the terms of agreement are not intended to have, and therefore do not have, any binding effect of their own: Governor & c. of the Poor of Kingston-upon-Hull v. Petch  EngR 995; (1854) 10 Exch 610 (156 ER 583). The parties may have so provided either because they have dealt only with major matters and contemplate that others will or may be regulated by provisions to be introduced into the formal document, as in Summergreene v. Parker HCA 13; (1950) 80 CLR 304 or simply because they wish to reserve to themselves a right to withdraw at any time until the formal document is signed. These possibilities were both referred to in Rossiter v. Miller(1878) 3 App Cas 1124. Lord O’Hagan said: “Undoubtedly, if any prospective contract, involving the possibility of new terms, or the modification of those already discussed, remains to be adopted, matters must be taken to be still in a train of negotiation, and a dissatisfied party may refuse to proceed. But when an agreement embracing all the particulars essential for finality and completeness, even though it may be desired to reduce it to shape by a solicitor, is such that those particulars must remain unchanged, it is not, in my mind, less coercive because of the technical formality which remains to be made” (1878) 3 App Cas, at p 1149 . And Lord Blackburn said: “parties often do enter into a negotiation meaning that, when they have (or think they have) come to one mind, the result shall be put into formal shape, and then (if on seeing the result in that shape they find they are agreed) signed and made binding; but that each party is to reserve to himself the right to retire from the contract, if, on looking at the formal contract, he finds that though it may represent what he said, it does not represent what he meant to say. Whenever, on the true construction of the evidence, this appears to be the intention, I think that the parties ought not to be held bound till they have executed the formal agreement” (1878) 3 App Cas, at p 1152 . So, as Parker J. said in Von Hatzfeldt-Wildenburg v. Alexander (1912) 1 Ch 284, at p 289 in such a case there is no enforceable contract, either because the condition is unfulfilled or because the law does not recognize a contract to enter into a contract. (at p362)’
See Singh v Sydney Trains (2017) FWC 4015 delivered 7 August 2017 per Sams DP