Agree with Phil's estimate for unskilled labour - the variation depends not only on the job they do, but also on the length of the day.
When it comes to interior painting I would not go with unskilled labour. In my experience, there are "painters" and then there are people who paint. Different results. Painters who use tape & drop-cloths, who cut into corners and edges properly, who don't spray the windows with paint, who can accurately tell you how much paint to buy (instead of twice as much as you need) and who don't take a week to paint a room ...... expect to pay more than $60 a day. IMHO, the results are worth a few extra Belize Dollars.