Gene Maddaus Senior Media Writer The Writers Guild of America told members Sunday to be ready to hit the picket lines if no agreement is reached by midnight on Monday. In an email, the guild asked members to fill out a “picketing survey,” providing their preferred time and location to join in, by noon on Monday. “The greatest amount of leverage we collectively bring to a strike action is the withdrawal of our labor,” the guild wrote. “Picketing is a key tactic to demonstrate that we are all in this together, and that until a strike is resolved, it’s not business as usual.” Negotiators for the WGA and the Alliance of Motion Picture and Television Producers worked on Saturday and Sunday at AMPTP headquarters in Sherman Oaks. The email provided no update on the talks, other than to say that the negotiating committee “continues to bargain with the AMPTP with the goal of reaching a fair deal by tomorrow’s May 1st contract deadline.”