In recent weeks a new fee has been described in the media and in a new lawsuit against Fidelity. The fee, identified as an “infrastructure fee,” is imposed on mutual funds that seek “shelf space” on Fidelity’s recordkeeping platform and that do not otherwise pay sufficient amounts to Fidelity in other (more traditional) fees. The infrastructure fees have triggered a lawsuit and, according to the Wall Street Journal, a DOL investigation. More importantly, these latest revelations about Fidelity’s infrastructure fee serve as a stark reminder that plan providers’ quest to identify the true amount of recordkeeper fees -- and determine if such fees are reasonable -- is an ongoing and constantly evolving challenge.