Let’s say you don’t live in the United States or Canada. You’re probably confused that we celebrate Labor Day in September. Even Americans might not know this is unusual.
Most countries celebrate International Workers’ Day on May 1. And for most people, this is a holiday of the radical left. By contrast, most people see Labor Day as a holiday for center-left labor movements. International Workers’ Day is broadly international, while Labor Day is mostly American and Canadian.
That’s close, though not exactly right. For one, both holidays come from the US. Specifically, from the US in the 1880s. We know the September Labor Day date came first, but there’s disagreement over the details. What we know pretty well is that someone from the Knights of Labor established it in 1882. And the US made it a federal holiday in 1894.
But International Workers’ Day originated in the US as well. Likely because of the pre-existing folk holiday May Day. A bit later, the Second International set May 1 as a day of labor in 1891. However, in addition to May Day, the May 1 date refers to the Haymarket affair in Chicago.