Four workers at Deere & Co. have sued Fidelity Investments for what they say are “unreasonable” 401(k) fees, Reuters reports.

Filed in U.S. District Court for the Western District of Wisconsin, the suit asks the judge to allow thousands of other workers to join the suit to make it a class-action effort.

The suit charges that the 401(k) plan charged participants expenses that were not incurred solely for their benefit and that Fidelity shared some of the revenues it received from participants with the farm equipment manufacturer.

Fidelity spokesman Vin Loporchio said the company disagrees with many of the lawsuit’s assertions and that it plans to “defend against the suit vigorously."

Subscribe Now

Access to premium content including in-depth coverage of mutual funds, hedge funds, 401(K)s, 529 plans, and more.

3-Week Free Trial

Insight and analysis into the management, marketing, operations and technology of the asset management industry.