Census: “The first observance of Labor Day was likely on Sept. 5, 1882, when some 10,000 workers assembled in New York City for a parade. That celebration inspired similar events across the country, and by 1894 more than half the states were observing a “workingmen’s holiday” on one day or another. Later that year, with Congress passing legislation and President Grover Cleveland signing the bill on June 29, the first Monday in September was designated “Labor Day.” This national holiday is a creation of the labor movement in the late 19th century — and pays tribute to the social and economic achievements of American workers.

• 157 million – Number of people 16 and over in the nation’s labor force in June 2015. Source: U.S. Bureau of Labor Statistics, Table A-1.