Boeing has offered striking machinists a 35 percent pay increase over four years as part of a new contract proposal it hopes will end a month-long strike.
About 33,000 union workers, mostly in Seattle, will vote Wednesday on whether to accept the aviation giant's offer.
They have been on strike since September 14, stopping production of the 737 MAX and the company's 767 and 777 planes.
The company's financial results have been hit so hard that it announced earlier this week that it was seeking an additional $35 billion in financing. The company also said it would have to lay off 17,000 workers, or about 10% of its workforce, in November.
“The future of this contract is in your hands,” the union told workers on Saturday.
Union members previously rejected an offer including a 30% wage bonus, saying it was not enough to cover cost of living increases.
The union demanded a 40% salary increase and the reinstatement of a defined benefit pension, which guarantees income in retirement.
Although the latest offer is closer to the desired salary increase than the previous offer, it does not include a defined benefit pension, which would guarantee specific monthly benefits upon retirement.
It includes a $7,000 (£5,365) bonus if they accept the deal, a reinstated incentive plan and enhanced contributions to workers' pension schemes, including a one-off contribution of $5,000 plus up to at 12% employer contributions, International Association of Machinists and Aerospace. said Workers Local 751.
The strike dismayed the Biden administration.
Acting U.S. Labor Secretary Julie Su met with union representatives and Boeing executives in Seattle this week to encourage a resolution. The company plays an important role in the American economy.
It has also been under scrutiny since an incident in January, when a defect caused a panel on a new Alaska Airlines Boeing 737-MAX to explode shortly after takeoff.
The Federal Aviation Administration has barred the planemaker from increasing production and opened a new safety investigation into Boeing on Friday.
In July, Boeing agreed to plead guilty to a charge of criminal fraud conspiracy and pay at least $243.6 million (£187 million) after violating a 2021 deferred prosecution agreement, relating to two 737 planes -MAX lost in almost identical accidents that claimed 346 lives five years ago.
