The new rule that calls for retirement plans to divulge more information on fees has done little to spur action by plan participants, a new survey by the Plan Sponsor Council of America suggests. Nearly 96 percent of plan sponsors responded that they saw no change in participant behavior as a result of the new rules, which took effect this summer. An average of 1.4 percent of participants asked questions regarding the fees. Most plan sponsors said they received no inquiries at all about the new disclosures.