In the State of Washington there is a minimum wage law. Everyone who works is paid at least that. Convenience store workers, Sears workers and so on.
Farm laborers generally make more because they do have some skills and the 'law of supply and demand' allows them to command more. If they are reliable and willing to learn, farmers will keep them on as permanently as possible and pay them even more.
During the summer when I hire nearly 50 packing house worker who work piece rate, these individuals make from $10 per hour to $15 per hour. Not bad for unskilled work!!
In addition, their childres get free breakfast at school or Epic, free lunch at school or Epic. And, most of the food that you taxpayers buy goes into dumpsters because they don't eat it. That is true even if it is their frioles or burritos.
They also qualify for unemployment when not working and free medical at the Farmworkers clinics, which you also pay for with your taxes.
As far as their 'rights' are concerned, if they desire to turn you in, you will be investigated by L & I or Human Right's Commission, even if the complaint has no basis.
So, revel in your belief that they are dumb and can't understand their rights. Give me a break!!!
Are these illegal aliens you are hiring?