No they don't.

I've got my resume in with both Skywest and EXJ. While some say 70seats for 50seat pay skywest is still one of the good guys on the regional level. They might not have ALPA, and several people there might want it, but they seem to be getting screwed less than those that are alpa. The true goal of ALPA is to keep pay and QOL up. Skywest and EXJ both are doing this compared to the others. Whether skywest is part of the union doesn't matter if they are exceeding it's abilities. Look at Mesa.