Without going into specifics too much.
I work on a contract that obviously sets out a specific job description for me and a set amount of hours. However, my team leader is sending me to cover people who are off, who perform a different set of tasks than myself and in a different area, including duties I have never been taught. They are saying because my contract says 'other reasonable duties' this covers me performing these tasks.
It's also worth mentioning that the people I am covering work a shift pattern of 4 on, 4 off... and they are not entitled to breaks (I've never heard of this before, but basically something to do with they can eat whilst it's quiet - it's a security-related job).
When I cover them, I am not entitled to a break, which kind of annoys me because I do not have a break to go to the shop, and I only find out I am going to this post when I arrive at work. If I were to know beforehand I could prepare a meal to take.
I'm curious to know if it's even legal to send me to cover someone's job who is different to mine, and also operate on a separate contract.