Debt-ridden plane-maker Boeing (NYSE:BA) has reportedly delivered layoff notices to more than 400 members of its professional aerospace labor union, as part of a larger workforce reduction plan amid ongoing financial 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.

WASHINGTON, Nov 13 (Reuters) - Boeing said on Wednesday it is issuing layoff notices starting this week to workers impacted by a broader plan by the heavily indebted planemaker to cut 17,000 jobs, or 10% of its global workforce.

Boeing has issued layoff notices to 438 members of the Society of Professional Engineering Employees in Aerospace (SPEEA) this week as part of a broader effort to reduce its global workforce by 10%, according to KIRO Newsradio.

Boeing laid off 111 St. Louis-area mechanics amid production pauses and plans to reduce its global workforce by 10%.

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.

The layoff notices were issued last week to members of the Society of Professional Engineering Employees in Aerospace (SPEEA), with affected workers remaining on the payroll until mid-January.

Boeing employees will begin receiving layoff notices on Wednesday, according to a timeline that the company confirmed for the cuts. The job cuts will include executives, managers and employees, according to information previously released by the company.

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,