I am full time Labor and Delivery but will pick up extra 4, 6, 8, or 12 hour shifts in ER and Nuc Med doing cardiac stress tests. It is nice because when they call/text for extra help I get to set my hours. Today a dept needed extra help and I told them I would be happy to but I was leaving no later than 1330 to pick my kids up from school. I made extra cash instead of piddling around my house and didn't miss any family time!