Strange as it might sound, it is possible for one’s status as an employee to end in circumstances that do not terminate one’s contract of employment. This was the thorny issue in Société Générale London Branch v Geys, decided by the Court of Appeal on 30 March 2011.

In that case, it was crucial to establish upon which of three potential dates Mr Geys’s contract ended, because it was only if it lasted until the latest possible date in January 2008 that a contractual entitlement to a huge bonus (the substance of his claim) could arise.

Société Générale had terminated his employment at a meeting on 29 November 2007, but Mr Geys had written back indicating that he was affirming his contract. Nonetheless, Société Générale made a payment in lieu of notice (in line with his contract) on 18 December 2007, and formally notified him of this by letter on 6 January 2008. The Court of Appeal overturned a previous ruling by the High Court and found that Mr Geys’s contract of employment ended on 18th December – thus he had no entitlement to the extra bonuses.

From Mr Geys’s point of view that, no doubt, was the most interesting (if disappointing) part of the judgment. However, of more general interest is what happened on 29 November 2007, because it highlights the conflict between “pure contract law” and statutory concepts of dismissal which underlie other claims such as unfair dismissal.

There was doubtless a repudiatory breach of contract by Société Générale – they made clear that Mr Geys’s no longer had a job. Yet such a unilateral breach cannot terminate a contract if – as happened here – the other party refuses to accept it. Hence the contract must continue, until ended in accordance with its provisions. However, Mr Geys’s status as an employee was clearly ended on that date – so for statutory purposes, it would be the Effective Date of Termination (EDT).

At first glance this is hard to get one’s head around – how can a contract of employment exist when (arguably) the essential mutuality of obligation has gone and one party is no longer an “employee”? Understandably, perhaps, the Court of Appeal wants the Supreme Court to consider whether an unaccepted repudiatory breach should, in fact, be able to terminate the contract.

However, what if the Supreme Court follows this route? The whole doctrine of constructive dismissal (which is a contractual concept which can be the basis for statutory unfair dismissal) relies on an employee promptly resigning in acceptance of a fundamental breach of contract by an employer. Where does it leave the employer’s defence that the employee affirmed the contract if the contract can be terminated by that unilateral breach alone? Will the EDT (so important for strict time limits) be at the date of resignation (as now) or the date of the breach?

The current situation is the product of conflicting legal concepts – but removing that conflict could generate just as many problems. In a case in which the date of dismissal, constructive or actual, is an important consideration proper resolution of the point could be vital, thus underlining the need for expert legal advice in any such situation.