The struggles at Boeing continue as the company plans to lay off more than 400 aerospace labor union members — just weeks after ending a massive strike involving a separate union. Layoff notices went out last week to members of the Society of Professional Engineering Employees in Aerospace,

Boeing will lay off more than 2,500 workers in the U.S. states of Washington, Oregon, South Carolina and Missouri, according to federally required filings posted on Monday and a union official, as part of the debt-heavy U.

Boeing says it will be several weeks before it fully resumes building passenger planes, as factory workers return following a strike that lasted nearly two months.

Boeing received its first order after reaching a deal with striking machinists, but it still faces a difficult road ahead.

A week after Boeing machinists ended an almost two-month strike, the aerospace manufacturer said Tuesday that October saw it deliver the smallest number of planes in years.

As Boeing's Machinists return after eight weeks on strike, experts predict the work stoppage strained finances for the company and region, but likely ended before the cost got prohibitive.

Boeing plans to lay off over 400 aerospace union members amid financial challenges, following a machinists' strike and production slowdowns.

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.