In Sharma and others v Manchester City Council [2008] IRLR 336, the EAT held that part-time status does not need to be the sole reason for less favourable treatment, as compared to that of a full-time worker, for a complaint of unlawful discrimination to succeed.
In Voss v Land Berlin C-300/06, the ECJ ruled that legislation under which overtime pay arrangements result in a part-timer being paid less overall than a comparable full-timer for the same number of hours potentially contravenes the principle of equal pay enshrined in art. 141 of the Treaty establishing the European Community.