Exactly, and you have to be willing to bear the time and expense of suing a corporation with more money and attorneys than you.
Every time someone has a casual "Well, you can just sue them" answer to being wronged, they forget that the court system (at least in the US) is inaccessible unless you're rich and richer than your opponent. If my employer does something wrong to me, like wage theft, fraud, harassment, discrimination, it doesn't matter that I can sue them in theory. In practice, it's me and my $5,000 in life savings vs. 100 corporate attorneys working at a $N billion company who will inundate you with paperwork and motions and procedural tricks. Not to mention, if you sue them, they will fire you in retaliation (which is also probably illegal) and may even go so far as informally blacklisting you in your industry. So you're giving up your time, your life savings, likely going into debt, and giving up your future employability, just to pit your one already over-worked attorney vs. their army. Good luck.