Hi, I work for quiet a large company & need some advice with a matter. I work on the night shift 10PM - 6AM, Five nights a week. Part of the pay is an unsociable hours allowance. For the last 2 years some of my colleagues have changed there hours to 6PM - 6AM, Three nights a week. But as they've not had there employment contracts changed they're still getting paid the same night shift allowance as me which is considerably more as I work five nights a week. I can understand this may sound like sour grapes but I feel it's unfair as there getting paid extra for nothing whilst I have to work for it. I want to know whether if the company is doing anything illegal or ethical by deliberately allowing this to happen? Thank You In Advance People.