The Writers Guild of America (WGA), a labour union representing film and TV writers, is renegotiating a three-year contract for 11,500 members that is set to expire this week. Here's what you need to know about a potential writers' strike. Rather than the traditional pipeline of ordering a TV series from a pilot episode, some companies are now opting for script-to-series orders. The last writers' guild strike began in November 2007 and ended in February 2008 after 100 days. A potential writers' strike was averted in 2017 when both parties reached an agreement by their deadline.