Boeing will be under a spotlight Wednesday as the beleaguered aviation giant announces what is expected to be its biggest quarterly loss in four years, and striking employees vote on whether to end a costly weeks-long stoppage.

Union leaders expect a close vote when 3,000 Boeing hourly workers weigh a sweetened contract offer that could end an almost six-week strike, the union's chief said Tuesday.The vote will take place throughout Wednesday,

Their work stoppage has halted production of the plane maker's best-selling 737 MAX and its 767 and 777 widebodies.