BOEING and the machinists’ union have negotiated a new contract proposal that would provide bigger pay rises and bonuses in a bid to end a strike that has stopped aircraft production for more than a month.

Announcing the possible deal on Saturday, the International Association of Machinists and Aerospace Workers (IAM) said it planned to hold a ratification vote on Wednesday.

The union said the Boeing offer would increase pay by 35 per cent over four years, up from the 30 per cent that the company offered last month.