After the 80 hours a week spent at work, 56 hours a week spent sleeping (going to work while sleep deprived is like going to work drunk, so they do expect you to sleep!), 3.5 hours a week spent showering (and they do expect you to come to work clean, wonder why), 10 hours a week spent in commuting to work, 7 hours a week spent on feeding yourself (and they do expect you to eat so you can work (I can spend weeks without eating, but then I won't be productive)), 4 hours a week to buy the groceries, and 7 hours a week spent on the internet or TV, there remains NO time for any hobby.
So if they want hobbies, they will have to reduce drastically work time.