My husband, however, thinks that when I'm home, I should be working on housework all day long. He hates dropping by home and seeing me on the computer or watching TV, even if I'm folding laundry while I'm watching.
This is where I get hung up. He expects you to literally be doing HOUSEWORK all day long? That's not realistic. For one, I'd hope the house doesn't need THAT much work, and second, however much work it does take - it's up to you when it gets done throughout the week.
That being said - while maybe it's unfair to expect you to do EVERY last thing, at the same time, if my DH stayed at home (w/o any kids), yes, actually, I would expect about 95% of everything to be done. Back to what I said above- taking care of our house is not a 40 hour a week job, so he'd absolutely have time to relax and do his own thing while ALSO doing pretty much everything else so that when I get home - that will be our together time.
That's where, though, I do feel the other spouse should chip in - help out w/ dinner, put the dishes away, SOMETHING. Just to show that you don't expect everything to be done. Help out to some degree. (Especially because when/if you do go back to work, he'll be in for a world of hurt if he's still on this "everyhting will be done for me" kick and doesn't feel he needs to help out).
Clearly yo uall need to talk more and set realistic expectations. You are NOT his employee and actually you don't "have" to do everything, especially 8 hours a day every day in fear he'll "catch" you not doing something. I really couldn't live like that.
You are PARTNERS. He's making the $$, you're taking care of the house. Do you criticize how he does his job? Nitpick what he does/how much he does and when? No? Then he needs to not criticize how you do yours.