Boeing’s largest union, representing around 33,000 workers on the U.S. West Coast, has voted to approve a new contract. This ended a seven-week strike that disrupted jet production and intensified financial pressures on the company.

The machinists who manufacture Boeing’s best-selling 737 MAX, 767, and 777 aircraft walked off the job on September 13, demanding higher wages and the restoration of benefits that were lost over a decade ago.

The newly ratified agreement, approved by 59% of union members, includes a 38% pay increase over the next four years.

Additionally, each union member will receive a $12,000 ratification bonus, adding to Boeing’s wage bill, which analysts estimate could increase by $1.1 billion over the contract term.

For Boeing, the end of the strike brings relief amid a challenging period marked by production delays and quality control issues. The new agreement, negotiated with support from President Joe Biden and Acting Labor Secretary Julie Su, grants workers a significant pay boost and other incentives.

However, it did not provide the defined-benefit pension they wanted. Instead, workers will receive more company contributions to their 401(k) retirement plans.

“This is a victory. We can hold our heads high,” said Jon Holden, the union’s lead negotiator, following the vote. While Boeing did not agree to all demands, Holden highlighted the new contract’s inclusion of a commitment to build its next aircraft in the Seattle area—a first for the plane maker.