More than 700 federal employees spent at least half their time working for unions rather than performing their government jobs in 2012.

That figure includes 558 workers who spent more than 1,500 hours annually on official time, which means they did little, if any, work for their agencies, and 150 who spent at least 1,000 hours annually on union release.

Another 232 federal employees spent at least 500 hours — about a fourth of the year — doing union duties instead of government work.

A standard work year is 2,080 hours, minus any holidays and vacation, according to the Department of Labor.

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