I was lucky, I had people fortunately, who knew I was skilled and appreciated it. I was assigned to the same company for many years consistently. I was treated as an equal for the most part. The exception being the pay. After all the years, I made less money per hour doing the same job that I did when I began. But the work environment made it worth it.
But at other assignments, It was made very clear, you were to be seen and not heard. You probably worked harder, put in more hours and got in trouble for things that had nothing to do with you and you had little protections because if you injured yourself or found fundamental problems needing to be addressed, if you spoke up you were replaced. But bills still had to be paid so the work, although severely under appreciated, was there and still needed to be done.
The great employers and consistent work for the most part
The not great employers, the treatment at some placements and the pay.