Is there anything that I can do?

About my job and they way I am treated and the way my coworkers are? We are threatened at least once a month that we will all be fired and they do a lot of shady business dealings. For example, they charge me $10 per check to have my uniform cleaned even though I only make minimum wage and in Oregon (where I work) that is illegal. And every day one of the owners who is also the accountant/HR Clocks us off at 8pm when we close even though we usually stay later because its busy she doesn't let us clock ourselves out. If we get overtime she will sometimes change our time cards to short us a few hours or only pay us for $40. Anytime there is an accident at work where an employee gets hurt and needs to get workers comp, when they get back to work they are always fired shortly after for some random reason. Also, recently our GM quit about 4 months ago and made the assistant manager take on all the GM responsibility but do not pay him for it. As well as there are a few employees that have worked there several years and have not received a raise even though all have taken on more responsibility.

I do have more examples but that will take forever to go through them all. But is there anything that can be done? and who could I contact?