There's really not enough data to give you great advice. Is he a developer? Are you a developer? Is he really slow or is he just giving bad estimates on how lo

There's really not enough data to give you great advice. Is he a developer? Are you a developer? Is he really slow or is he just giving bad estimates on how long things take? Are you shifting specs which causes delays? You're making character judgments of him and obviously you're biased and we have to take your word for it. You point out some anecdotes on his apparent laziness but you could do the same with anybody. I think one think you can do is recognize that you and this person may not have the same mindset on how to work. That's not saying he's wrong or that you're right. It's saying that there's a disconnect that should be resolved. Personally, I agree with nostrademons. Working those kind of hours can happen for crunch time but it's not a long term strategy for a company, even a startup. You'll burn out quickly and everyone will hate each other. Work hard but take time off and don't neglect the rest of life otherwise you'll end up hating it. Leave time to refresh your batteries.