To play video games with my frens, eating burgers with my family, and have fun.

I couldn't care less. If my boss would assign me to more hours i would need to resign a new contract, which i don't have to sign so i don't need to work more than what i want. Simple as, and no, he can't legally fire me for that and no he can't even fire me for anything without further permission (And i wont explain how and why, its just how it is in my country)