If he wants things done a certain way, there should be a process doc laying out step by step what he wants done and how. If there is no doc then he’s not doing his job as a boss/manager. That is on him.

An hour / day is excessive and maybe this guy has trust issues. With that said, mistakes are bad and if it’s something a client would be annoyed or pissed about. Then no one should be making them….both you or him. If there is a lack of process docs, then I would bring that up and how you think it can help you both free up time to take on more work and grow the business. If he refuses to make them, then run as the situation won’t improve.