According to The Seattle Times, the pink slips were distributed to members of the Society of Professional Engineering Employees in Aerospace, or SPEEA, last week. The employees will continue to be paid until the middle of January.

Boeing has delivered layoff notices to more than 400 members of its professional aerospace labor union, part of thousands of cuts planned as the company struggles to recover from financial and regulatory trouble as well as an eight-week strike by its machinists' union.

The manufacturer distributed pink slips last week to members of the Society of Professional Engineering Employees in Aerospace, or SPEEA

Boeing has laid off more than 400 members of its professional aerospace labor union, part of companywide cuts that will reach 10% of Boeing's workforce.

Boeing Co. (NYSE: BA) has issued layoff notices to over 400 members of its professional aerospace labor union, as part of the company's ongoing efforts to recover from financial and regulatory challenges.

Boeing started issuing layoff notices Wednesday to 17,000 employees to cut 10% of its workforce in an effort to shore up the aerospace giant's shaky finances.