I already do fulltime with 14weeks vacations, and occasional moonlighting evenings at higher rate 6-9pm. I could add another parttime work on weekends, i.e. do 1-2weekend shifts per month or 20 extra shifts per year. I'd make about 5k for 8hours. So 100k extra, but after taxes it becomes 60k.. and to do that I have to go through all the bullshit credentialling which is the same paperwork as if I'm getting a new mortgage.