Most Helpful Girl
No, they don't. Actors sign a contract for a certain number of shows, and those are the shows they are paid for. It would be really expensive for production companies to keep paying actors that are no longer working on the show. It's like when you get fired or quit a job - you don't keep getting a paycheck from that company.
Most Helpful Guy
No, they know from the beginning while siging contract that they are required for a certain amount of time.