 Broadway productions are fully unionized, and all employees are members of unions such as Actors' Equity Association (AEA), Stage Directors and Choreographers Society (SDC), Local 802 of American Federation of Musicians (AFM), and Local One of International Alliance of Theatrical Stage Employees (IATSE).The Broadway League also works with the Dramatists Guild of America, an organization composed of playwrights, composers, and lyricists, to engage authors for Broadway productions.Even though the Guild is not a union because authors are not employees of producers or theatres, the Guild provides the Approved Production Contract, a contract template for authors to use in negotiations with producers.