 740 Money News at 10 and 40. After months of negotiations, Boeing's largest employee union could be walking off the job in September. Thousands of machine workers packed Seattle's T-Mobile Park yesterday to authorize a possible strike if a new deal is not agreed to by September 12th, which is when the current contract ends. The union's proposal includes a pay increase of more than 40 percent and restoration of the traditional pension program that was eliminated in 2014.