The approved contract offer includes a 38% raise over the next four years, a ratification bonus of $12,000 and expanded 401(k) contributions.

The deal includes pay raises of 38% over four years, and ratification and productivity bonuses. Boeing refused to meet a demand to restore a company pension plan.

More than 33,000 Boeing workers reached a tentative agreement Monday night to end a weeks-long strike that quickly became one of the costliest strikes in recent history—estimated to have cost the US economy more than $9.6 billion.