The latest offer included a 30% raise, which was 5% more than its last offer, and a restoration of its performance bonus.

Negotiations between Boeing and 33,000 striking machinists have broken down as the walkout that has put the company’s financial future at risk enters its fourth week.

The union representing the striking workers criticized Boeing and said it was “hell-bent” on pushing through a “non-negotiated offer” it released to the media last month.