Deere & Co. shares climbed the most in two weeks with the end of a monthlong strike at its U.S. plants easing concern about the company’s ability to supply farmers with equipment.

Late Wednesday, union workers United Auto Workers members voted 61 per cent to 39 per cent to ratify a new labor contract with the company, putting an end to their first strike since 1986. The deal will increase pay and boost retirement benefits over a six-year agreement. The union said the work stoppage “captured the mood of a nation” wanting fair wages and benefits for workers. The company said in a message that operations would resume Wednesday night with many reporting to the third shift. 

The strike had thrown several of Deere’s businesses into turmoil. Software engineers and computer programmers left their desks to assemble sprayers and combines in manufacturing plants instead. Serious delays in replacement parts threatened farmers, who rely on functional machines and speedy repairs at the peak of harvest. Used farm equipment prices were hitting record highs amid shortages.

“What it does, ultimately, is reduce the uncertainty that was starting to emanate into the market,” Larry De Maria, an analyst at William Blair & Co., said in a phone interview. “Deere’s farming customers are clearly in need of parts and new equipment to be delivered as soon as possible.”

Deere shares rose as much as 3.5 per cent, the most since Nov. 1, and were up 2.2 per cent at 12:19 p.m. in New York. Deere outperformed the broader market, with the S&P 500 Index up 0.3 per cent.

The union action set “a new standard for workers not only within the UAW but throughout the country,” Chuck Browning, vice president of the UAW, said in a statement. 

The agreement brings an end to the work stoppage that took some 10,000 workers off the job for just over a month. The last time Deere workers picketed 35 years ago, it lasted 163 days. The strike is part of a broader worker movement in the U.S. with employees successfully pushing for higher compensation as the economy emerges from a pandemic-induced slump. 

The deal, which follows two other failed ones, is a six-year contract that will increase worker wages by 10 per cent in the first year and then 5 per cent in the third and fifth years. A 3 per cent bonus will be paid in the even years of the contract based on prior-year earnings, and each worker will receive an US$8,500 signing bonus.

There are still no adjustments to a contentious two-tier compensation system, in which workers hired after 1997 receive less generous benefits than those who started working there earlier.

The strike was squeezing the company. Last week it sent an email to gauge the interest of even more salaried information technology workers to volunteer in factories if the situation continued.

“It says a lot about the new determination and solidarity of John Deere workers that they have forced the company - and top UAW leaders and negotiators - to return to the bargaining table time and again to resolve the strike with a better contract,” said historian Nelson Lichtenstein, who directs U.C. Santa Barbara’s Center for the Study of Work, Labor and Democracy. 

Nearly 30 years ago, Deere’s historic Midwest rival, Caterpillar, almost destroyed a union that picketed during a bitter battle. 

“Those days seem past,” Lichtenstein said.