Boeing workers on strike since September 13 will vote Monday on a new contract offer, which includes a 38% pay raise over four years, a $12,000 signing bonus, and an annual bonus plan.

Represented by the International Association of Machinists and Aerospace Workers (IAM), over 30,000 factory workers have already rejected two prior offers, seeking a 40% wage increase and a return of a defined-benefit pension.

The IAM has endorsed this latest offer. Boeing shares rose 2.5% in after-hours trading following the announcement, CNN has reported.

Written by B.C. Begley