Certainly, corruption can exist in any institution, corporation or government agency. Like any other organization, unions are not immune to it and, in fact, have many instances of corruption and other crimes in their history.
Unfortunately, it is the members who have been hurt by those actions.
Union officers stealing members' money is one of the most common forms of corruption. Every year the U.S. Department of Labor publishes a list of the ones they caught (of course, there's no way of knowing how many they didn't catch).
Here are just a few examples:
United Steelworkers Union
International Brotherhood of
Electrical Workers
International Association of Machinists
Hard-working members who have lost millions of dollars!
To learn more:
The Department of Labor (DOL) web site lists criminal actions by union officials, including several hundred cases over the past two years. To go to the DOL site, click here.