President Joe Biden picked up the endorsement of a group of 17 different unions as he seeks reelection in 2024.

Biden, who calls himself the most pro-union president in history, was endorsed on Friday by the American Federation of Government Employees, which represents 750,000 federal workers, along with 16 other labor groups.

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"During his first term, President Biden has proven himself to be the most labor-friendly president in our lifetime," AFGE President Everett Kelley said in a prepared statement. "The results of our endorsement process show that he is the overwhelming choice of AFGE members. It’s not hard to see why."

Those reasons include raises, undoing the actions of the Trump administration, providing federal employees with 15 weeks of emergency leave, and efforts to expand the union's size.

Labor unions are huge backers of Biden and Democratic candidates generally. Biden launched his 2020 presidential campaign at a Teamsters hall in Pittsburgh, and labor organizations contributed $27.5 million to back his successful White House bid.

Among the other unions is the AFL-CIO, which represents more than 12.5 million workers and said this is its earliest presidential endorsement in history.

The news comes one day ahead of Biden's union-based rally in Philadelphia.

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The Biden campaign welcomed the news with its own statement.

“The president and vice president are humbled to have earned this historic groundswell of support nearly 17 months before the 2024 election,” campaign manager Julie Chavez Rodriguez said. "With the early support from the labor movement, our campaign can tap into organized labor’s incomparable organizing abilities, which allows us to reach deep into communities and talk to voters about the tens of thousands of good-paying union jobs created by President Biden’s first-term agenda."