While today Labor Day is often celebrated as the unofficial end of summer — the last day for beaches, vacation seasons and outdoor pools, and in some cases the last day of summer break for public school systems — its intended purpose is to celebrate the contribution of the labor force.

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Links: • NYT article on first Labor Day march

• Oregon celebrates Labor Day

• Congress declares a federal holiday

• May Day Haymarket Riot

• Department of Labor outlines Labor Day

• AFL-CIO statement on Labor Day

• JoshShear.com: The Origins of Labor Day