The prolonged strike at General Motors is estimated to have hit 150,000 workers in the auto industry, a report from research and consulting firm Anderson Economic Group showed on Tuesday.
The strike at the company began on Sept. 16, with 48,000 members of the UAW seeking higher pay, greater job security, a bigger share of the automaker's profit and protection of health care benefits.
About 75,000 employees of auto parts suppliers have either been temporarily laid off or have seen their wages shrink due to the slump in demand from GM, according to the AEG report.
The research firm estimates that the strike has resulted in a $660 million profit hit for GM and more than $412 million in direct wage losses for all employees through the third week of the strike.
It has also led to $155 million in lost federal income and payroll tax revenue and $9.1 million in lost Michigan income tax revenue.
Talks on a new labor contract took a "turn for the worse" on Sunday after the UAW rejected GM's latest offer but the two sides were still talking.
"We continue to meet with the company and are still not in agreement on key issues such as wages and health care", UAW Vice President and Director Terry Dittes said.