I've been working for a major supermarket for just over a year. When I got the job I was very honest about my availability.
I'm frequently being asked if I want overtime and it's getting to a point I feel awkward keep turning it down. Everyone else seems to jump at the chance for more shifts.
Aibu to barely ever do the overtime? I help out in the busier periods like Christmas and Easter so it's not that I never do it.