I’ve worked for a firm for nine years and have a contract whereby I get double time and a day in lieu for Sundays and Bank Holidays. People who joined after me are on a better rate of pay but don’t get extra for Sundays and only get time-and-a-half for Bank Holidays. I’m told I can switch to the new system if I want to. Can they discriminate like this over pay, and run two separate systems?
Unless there’s a collective agreement in operation there’s no obligation to pay you the same as others in the firm. That’s unless you could argue you were being discriminated against on grounds of colour, sex or disability, or because you work part-time. At least the firm is giving you a choice.