Firefighters and police officers
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Rescue personnel and police work to clean up Staten Island, New York after Superstorm Sandy pummeled the east coast.

About 1.1 million protective services workers -- cops, firefighters, corrections officers and security guards -- are union members, accounting for 35% of the entire occupation.

For these workers, the pay gap can be huge between a non-union and union job.

Union workers make about $1,008 a week, and non-union workers make $627, according to the Bureau of Labor Statistics.

Major unions: International Union of Police Associations; International Association of Fire Fighters


- Last updated December 12 2012 08:19 AM ET
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