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About 12% of U.S. workers were union members last year. Here are 8 of the most heavily unionized jobs.
About a quarter of workers at utility companies are union members. These jobs include operators at call centers at your local gas company, to engineers who fix power lines.
This summer, a dispute between Consolidated Edison, a power company in New York City, and its 8,000 unionized workers dragged on for three weeks as the two groups argued over pension and health care benefits.
In the end, the two sides agreed to a new four-year contract after the governor stepped in.
Union employees in this industry tend to earn 10.2% more per week than non-union workers.
Major unions: Utility Workers Union of America; International Brotherhood of Electrical Workers