John Deere says it won't return to bargaining table with striking workers

Deere executives said the heavy equipment manufacturer is done negotiating with striking workers.

Marc Howze, chief administrative officer of Deere, said Wednesday that a deal the United Auto Workers union rejected  earlier this week represents the company's best offer, including an immediate 10% raise, as the company tries to contain costs.

Howze declined to discuss how much the ongoing strike is costing Deere, which will release its next earnings report later this month. The disputed contract would cover more than 10,000 Deere workers at 12 facilities in Iowa, Illinois and Kansas, who make the company's iconic John Deere green tractors and other equipment.