Over 32,000 employees of the company, which is trying to turn things around under a new CEO, are refusing to come into work.
On September 13, they protested against new contracts by walking out of companies that build airplanes, including the 737 MAX models, in the Oregon and Seattle areas.
The workers’ demands for a 40% salary increase are being made by the International Association of Machinists and Aerospace Workers (IAM).
Additionally, it wants to see a defined benefit pension plan reinstated.
This week, Boeing reportedly offered a “best and final offer” that included a performance-based incentive and a 30% wage increase spread over four years.
The union claims the offer is not good enough for its members, thus it has declined to put it to a vote.
When the strike started, Boeing put tens of thousands of other employees on leave.
The 737 MAX models, which are the company’s best-selling aircraft, were already suffering from production restrictions enforced by authorities following the January mid-air Alaska Airlines incident, in which a panel burst, forcing the 737 MAX 9 aircraft to make an emergency landing.