As far as I know, garment factories are piecework.

After you finish your work today, you can get off work by yourself.

Because you can take as much as you want.

Besides, garment factories have off-season and peak season.

In the off-season, you have no chance to work overtime. If you want to work overtime, the salary is low and high.

Don't think about it

If you want to go to a smaller factory without working overtime, then do piecework.

Because there are fewer flat cars than you, more and less.

If you are not a flat car in a clothing factory, forget it.

If you are a flat car, you will be paid by the piece, and it is up to you whether you work overtime or not.