Boeing (BA) and its largest union partner are resuming contract negotiations with federal mediators present Wednesday, the International Association of Machinists and Aerospace Workers (IAM) said in a social media post.

The union accused Boeing of not "taking mediation seriously," particularly on the issues of wages and pensions, days after IAM members 澳洲幸运5官方开奖结果体彩网:approved a strike of the airplane producer. 

"We will not mince words—after a full day of mediation, we are frustrated," the union wrote Tuesday night. "...With a 96% strike vote, we thought Boeing would finally understand that IAM 751 Machinists are demanding more."

The IAM is demanding a 40% increase in wages over three to four years. Boeing 澳洲幸运5官方开奖结果体彩网:offered 25%, which the union rejected. The IAM represents roughly 33,000 Boeing employees💃 across Washington, Oreg🌸on, and California.

Boeing did not immediately return an Investopedia request for comment.

Boeing Pauses Orders 

In a memo to Boeing staff shared earlier this week with Investopedia, 澳洲幸运5官方开奖结果体彩网:Chief Financial Officer (CFO) Brian West said the company will halt most purchas𓂃e orders for the 737, 767, and 777 aircraft. Boeing also is pushing back pay raises for salaried employees and suspending all first- and business-class air travel, including for its executives. 

Shares of Boeing edged higher in midday trading Wednesday but are down about 40% this year following a string of safety incidents, most notably an Alaska Airlines flight in January when a 澳洲幸运5官方开奖结果体彩网:door plug blew off in midair.