Depending on the family member, working for them might be harsher than one they find on their own.
My first "job" was working for my grandfather doing construction starting at like 14, and that fucker rode me like a rented mule. I loved my grandfather, but I fucking hated the asshole I worked for. Taught me to be grateful for what I don't have to do to get by. And also how to be a petty fuck to shit bosses in a way that kept me on this side of the line, but only just barely.
Of all the times in my life, that was one of them.

I tried this for a bit last year, and I never got it to work. I'm sure it was user error, but I'm super glad I got a new kit before shit blew up.
Might have to track down the bad kit I had and give this another try for giggles.