“It’s not reasonable to ask people to function without daylight, sleep and proper food for weeks and months at a time” - Ruby, lawyer. There’s been a lot of talk lately about reasonable and unreasonable work hours, thanks to a certain high profile legal case. Research has found Australians are working some of the longest hours in the world. It’s costing us tens of billions of dollars in unpaid wages, with experts calling it 'time theft'. So when is it ok for your boss to ask you to work overtime? And what is overwork doing to our brains and bodies?