Creating a Nation-Wide Union

I know that I am not alone in the frustration in having poor working conditions. Having to adhere to ridiculous standards set by your managers and supervisors while they don't want to pay a fair wage. I personally am getting tired of it and looking to create a union for people working in different industries nationwide. I honestly don't know where to start, but I do know I need people to stand with me. Can I get anyone to help me get started to change work culture in the U.S.?