The strike at Boeing by 33,000 members of the International Association of Machinists union, which reaches its seventh day today, has already cost the company and workers $572 million, according to an estimate from Anderson Economic Group.

Nonunion employees will experience one-week furloughs every four weeks as the troubled planemaker struggles to conserve cash.

Boeing will furlough tens of thousands of its executives, managers and others as more than 30,000 machinists intend to go on strike Friday in Seattle and Oregon.