International Workers’ Days and Labor Day both arose during the same period, in the U.S. nearly 150 years ago, in the midst of an explosive labor uprising in America’s industrial heartland.

From history and background to celebrations, here’s how May Day is different from Labor Day in the United States.

"The power to take back our country for working people, not billionaires,” one organization said ahead of the action.

The labor activism of the late 1800s still casts a distant light on Labor Day today, carrying a vital message about the struggle for control of workers’ daily lives.

Demonstrators across the nation are planning to rally on Labor Day in a day of action called, "Workers Over Billionaires." ...

On May 1, 1886, unions of skilled workers organized by their crafts or trades led a nationwide general strike for the eight-hour day.

Most of the world observes International Workers’ Day on May 1 or the first Monday in May each year, but not the United States and Canada. Instead, Americans and Canadians have celebrated Labor Day as ...