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,

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

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.