There’s no contradiction in “I’m the boss, so I choose what time I leave work” and “I have to do overtime nonstop for the next month or so”. If you’re an employee, the reason you can’t leave work is ‘cause your boss said so. If you’re the boss, the reason you can’t leave work is that your whole business is gonna fall apart and you’ll be out of a job if you do.

So yeah, if I wanted to leave at 4:30PM, I could. Thing is, I don’t want to, ‘cause it’s in my best interest for my company not to miss this deadline that’s going up. It’s not that I love working late. It’s that I dislike budget cuts due to loss of income.