I don’t know, I find this distinction by gender curious. Although considering that my sisters are very much into doing things their own way, it’s not much of a surprise.
EDIT: a more precise description of what my sisters do and one of my sister’s job.
Restaurant work is not typically salaried unless you’re the manager. I’d say that one might be an outlier. This is the first time I’ve heard anyone refer to hourly wages as independent work.
My brother works in the kitchen as a cook, I don’t know if that makes a difference, I admit I assume he works for a salary just because he has a Boss and is working for someone else.
And, well, maybe “self-employed” was the correct term? Although it didn’t fit well with what I wanted to say, but since English is not my mother language, I kinda get confuse sometimes.