The Employee Benefits Security Administration issued Information Letter 06-14-2021 stating that 29 C.F.R. § 2560.503-1 requires plan fiduciaries to disclose, on request, recordings and/or transcripts of phone calls between the claimant and the fiduciary, even if the recording was made only for quality assurance purposes.

EBSA summarized the request:
You are seeking guidance because you represent a claimant whose request for such a recording was denied. You indicate that the stated reasons for denial of the request for the audio recording are that the actual recording is distinct from the notes made available to you, which contemporaneously documented the content of the recorded conversation, and which became part of the “claim activity history through which [the insurer] develops, tracks and administers the claim.” By contrast, the denial stated that the “recordings are for ‘quality assurance purposes,’” and “are not created, maintained, or relied upon for claim administration purposes, and therefore are not part of the administrative record.”