Assuming i love the job equally. I'd pick the worker since it's a lot more money.
Save more and be able to retire early. Then if i want to keep busy, being my own boss would be good because money wouldn't be a problem, the extra cash would just be the cherry on top.
Also what jking said is very relevent. Most self employed tend to work a alot, take calls at night and during the weekend. I'm not doing all of that for less money