Boeing workers represented by the machinist union are set to vote on Monday on an improved contract offering a 38% pay rise over four years and a $12,000 signing bonus. The IAM endorsed the deal, stating that negotiations had reached their limit after a seven-week strike, which disrupted Boeing’s cash flow and halted production. Some members remain skeptical, particularly over the lack of a defined-benefit pension. Boeing shares rose over 2% in after-hours trading.