Forbes How To Avoid Trap Doors In Your 401(k) Plan Fees are so high that they outweigh the tax benefits of investing in the plan. This is perhaps the most startling conclusion of the Ayres study, co-authored by Quinn Curtis of the University of Virginia Law School. http://www.forbes.com/sites/johnwasik/2014/03/03/how-to-avoid-trap-doors-in-your-401k-plan/