Described by Boeing as its "last, best and final offer", the proposal includes wage increases beyond those offered in the deal previously rejected by union members.

Boeing offers a revised contract to 3,200 defense workers in St. Louis, aiming to prevent a strike with better pay, pension and benefits.

U.S. planemaker Boeing sent a new contract offer on Thursday to the union representing roughly 3,200 factory workers at Boeing's defense division, mostly in the St. Louis area. It contains some minor compensation changes that would benefit senior union members,