Mark Brennan Wins M&S WRC Decision Over Unfair Dismissal After Wife Shared Staff Discount

A Workplace Relations Commission adjudicator has ruled that Marks and Spencer acted wrongfully in dismissing sales advisor Mark Brennan, finding the retailer deployed a "nuclear option" sanction for a violation largely caused by his ex-partner without his knowledge. The tribunal awarded Mr Brennan €2,000 in compensation under the Unfair Dismissals Act, though reduced by 50 percent due to his acknowledged carelessness with security credentials.

The Discount Card Misuse

Between late October and mid-December, internal auditors at M&S identified serious anomalies in the use of Mr Brennan's staff discount account. His discount credentials were accessed 73 times across a six-week period, frequently at multiple locations simultaneously. Only one transaction during this window was linked to Mr Brennan's own payment method. An investigation launched in January revealed that his then-domestic partner had copied the discount card credentials and distributed them to a wide circle of family members and acquaintances without his knowledge or consent.

Upon learning of the unauthorized sharing, Mr Brennan immediately halted his partner's access to the account and voluntarily offered to reimburse the company for €464.39 in discounts claimed through the misused credentials. The retailer's disciplinary process concluded with his termination on 6 February, a decision upheld following an internal appeal in March.

Tribunal's Finding on Proportionality

Adjudicator Michael McEntee upheld the unfair dismissal complaint, acknowledging that while Mr Brennan was "careless with the tablet computer" that enabled his ex-partner's access to the discount credentials, this negligence occurred within a domestic relationship context and did not constitute grounds for dismissal. The adjudicator noted that M&S viewed any discount abuse in "almost apocalyptic terms," viewing termination as the only appropriate response.

Mr McEntee determined that the company's policy language referencing "deliberate or careless misuse" by an employee did not clearly apply to a scenario where an employee was unaware of third-party abuse occurring under his credentials. While acknowledging M&S's legitimate interest in protecting a valuable employee benefit, the tribunal found the dismissal sanction disproportionate relative to Mr Brennan's actual breach—which centered on inadequate device security rather than intentional policy violation.