I am so mad at my boss right now. I'm practically a wage slave...I've been working at least 10 years in my industry, and someone less experienced than me got a promotion.
Wage slavery is used to criticize labor explotation
Yeah, and I'm definitely being exploited at my current job. I work 60-hour weeks, and I haven't had a decent raise in 4 years. 
It generally means that there is an unequal balance of power between the labor and the business owners.  Sounds like that applies in your situation
Yup, pretty much sounds on point. They need to do something to stop stuff like this from happening.
They might be violating US Labor Law.  It oversees to the rights of employees in the United States
Is there any sort of relief that I can get under the labor laws?
United States labor law
United States labor law sets the rights and duties for employees, labor unions, and employers in the United States. Labor law's basic aim is to remedy the "inequality of bargaining power" between employees and employers, especially employers "organized in the corporate or other forms of ownership association". Over the 20th century, federal law created minimum social and economic rights, and encouraged state laws to go beyond the minimum to favor employees. The Fair Labor Standards Act of 1938 requires a federal minimum
a pool. "I've been here since 9 this morning and we're behind schedule, so I haven't even put on my costume. I didn't do anything during the actors' strike and now I'm back at work and I'm still not doing anything. It's a great way to make a living." 
Fabian enjoyed working with John Wayne. "What you saw is what you got," recalled the singer. "He was incredible. He was very nice to me."