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Representatives from over 400 unions marched along the parade route, which stretched from 44th to 72nd Street.

"I'm a great supporter of the unions, and of the work that's being done in our country today, by the people that matter,” said one watcher.

“I'm a big supporter of New York City and I'm a big supporter of the people that work in this country and do the hard work for everybody," said another.

Saturday morning, the union workers were joined by Mayor Michael Bloomberg, Senator Hillary Clinton and Governor David Paterson in a Midtown Manhattan breakfast meeting.

In her group address, Clinton attacked Republican presidential nominee John McCain for his economic positions.

“I heard nothing that suggests the Republican team even knows how to fix the economy for middle-class families, how to provide high-quality, affordable healthcare for all Americans,” said Clinton. “How even to guarantee equal pay for equal work for women. I did not hear any of the commitments that I was expecting.”

The mayor, who marched in the parade, made a softer criticism of the current economic situation, and said that city workers are better off than average U.S. workers.

“We still have a lot to do,” said Bloomberg. “Not everybody’s sharing the great American dream in this country, and not everybody is sharing the great American dream here in New York. People don’t have the benefits and the insurance they need. A lot of people don’t get a salary that lets them live and really enjoy what America can provide. But we are, I think, going in the right direction.”

Drivers in the Upper East Side were warned to steer clear of the Fifth Avenue parade route until 3 p.m.