Boeing will start temporary furloughs of professional and white-collar staff as it seeks to conserve cash amid a strike that has shuttered Seattle plants.

Boeing employees still working received a notice on the furloughs Wednesday, which noted that it will encompass tens of thousands of nonunion employees for the duration of strike.

The company is considering furloughs for employees, “significant reductions” to supplier spending and a halt to most purchase orders on the 737, 767 and 777 planes, it told employees in