Amazon.com Inc. warehouse workers in Minnesota plan to strike during the online retailer’s summer sales extravaganza, a sign that labor unrest persists even after the company committed to paying all employees at least $15 an hour last year.

Workers at a major auto parts plant in Michigan are poised to return to work after a brief strike June 21, alleviating the threat of a supply disruption for carmakers Ford Motor Co., Tesla Inc. and Fiat Chrysler Automobiles NV.

RIO DE JANEIRO — The president of Brazilian state oil company Petrobras resigned June 1, the latest fallout from a crippling truckers’ strike over fuel prices that has widespread implications for the future of Latin America’s largest economy.

Canadian Pacific Railway Ltd. reached a tentative four-year deal with the Teamsters Canada Rail Conference, ending a strike that began late May 29.

Brazilian cabinet ministers on May 28 called on truckers to end a crippling eight-day strike that has led to major shortages and disruptions in Latin America’s largest nation, saying the government had gone as far as it could to meet their demands.

Brazil sank further into chaos May 25 as the fifth day of a nationwide truckers’ strike prompted the deployment of national security forces amid warnings of a calamity in one of world’s largest cities and potentially devastating livestock losses.

A truckers strike in Brazil over higher diesel prices has left at least one McDonald’s in Copacabana struggling to serve its customers. The last perishable food delivery received at the restaurant was May 18, manager Yladian Barbosa told O Globo newspaper.

A potential strike by Canadian Pacific Railway Ltd. workers threatens to derail a recovery in Alberta’s beaten-down heavy oil prices.

More than a quarter of King County, Washington’s concrete delivery-truck drivers have gone on strike, and the rest could soon join them — threatening to delay dozens of projects amid the region’s record construction boom.

About 13,000 truckers intend to boycott Total Quality Logistics from June 28 through July 5 citing concerns over work conditions, the leader of a group representing the truckers told Transport Topics.