It might be better pay, health benefits, a pension plan, or just a voice on the job. But when it all comes down, they've had enough, and they want something better than they're getting right now. When they finally decide to do something about it, they call the Guild. Calling the Guild about organizing might seem scary, but it's not.
All information is kept strictly confidential.
It's far easier for us to unionize a show or workplace if we have a contact on the premises who is willing to talk to us regularly about what's happening there. We need inside information to be effective. Generally speaking, most shows are organized before or during production because the financial and time pressure of shooting make the producer more vulnerable to pressure from job actions by a crew trying to get a contract. The process is complex, but far from impossible. The most important thing to remember is that you are exercising your legal rights under the law and taking control of your future.