My work hours are 7-3:30. I leave at 3:15. And no one says anything.
I'm 9-5 and if I leave a few mins early no one really questions it. We're very relaxed here though

Yeah I'm not sure how they work it out. She's on $55k a year and I guess they just divide it down to work out and hourly figure which appears on her payslip?
All I know is, it's nowhere near enough to stress over staying back