Anywhere from 2 to 6 hours a day. According to my employment lawyer, being available for work even if you don’t have work assigned generally means you must be paid for your time. I work from home now, but between compiling code and taking breaks plus some days can be more quiet than others, it’s not too crazy of a pace. The last three jobs I’ve worked at have been like this, even with one of said earlier jobs being in an office.