It's not that there aren't any, it's that the protections for workers are abysmal compared to protections for businesses.
For example, if I stole money from my employer, they could have me arrested and press charges for theft.
On the other hand, if I am able to prove that my employer hasn't been paying me fairly and has been shorting my paychecks, I can spend a lot of money to take them to court, and in most cases, all that will happen is the business will have to... pay you back exactly what they already owed you. They won't pay fines, no one will go to jail, and it's an "oops" and then slap on the wrist kind of deal.
Worker protections exist, but the deck is stacked against us.
The Netherlands had a recent court ruling that established that if the employer is satisfied with your performance, then it doesn't matter how much time you spent doing your job. This was in a case recarding a man secretly working multiple jobs.