Background The Equality Act 2010 provides that men and women should receive equal pay for equal work. Employees can compare themselves with a comparator of the opposite sex who is performing either the same work or work of equal value. Several existing and former Tesco shop floor workers, who are mainly female, have brought equal pay claims. They are contending that their work is of equal value to that of more highly paid distribution centre workers, who are mostly men. The two types of job are done at different workplaces, meaning that there is a question as to whether it is possible to compare the roles.