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 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.

The workers will remain on the payroll through mid-January. Boeing's unionized machinists began returning to work earlier this month following the strike. The strike strained Boeing’s finances. But CEO Kelly Ortberg said on an October call with analysts ...