Part-time jobs that fit around childcare (update)

I am looking for part-time work that fits around school hours and found a few evening shifts near Knoxville. I am in Knoxville, in case local advice matters. Shifts are four to six hours and the pay is weekly. Is the schedule really fixed?

Ask whether the schedule is posted in advance and how they handle swaps. It matters a lot with kids.

Check how they treat part-time staff for benefits. Some add them after a set number of hours.