Most of the Main Cast Almost Quit
In 2012, Julie Bowen, Ty Burrell, Jesse Tyler Ferguson, Eric Stonestreet, and Sofia Vergara sued 20th Century Fox to dispose their contracts so they could presumably draw up a new contract for their work on the show. Ed O’Neill did the same at a later point in time. Whatever their reasons for doing this was, it apparently worked, as they continued working together until the end of the series. Some sources speculate that their reasoning for doing this was to get higher salaries for the cast because the show was so popular.