Page:Michael J. Biestek v. Nancy A. Berryhill, Acting Commissioner of Social Security.pdf/16

Rh.

I agree with much of ’s reasoning. I emphasize that I do not foreclose the possibility that a more developed record could justify an ALJ’s reliance on vocational-expert testimony in some circumstances even if the expert does not produce records underlying that testimony on request. An expert may have legitimate reasons for not turning over data, such as the burden of gathering records or confidentiality concerns that redaction cannot address. In those circumstances, as the majority suggests, the agency may be able to support an expert’s testimony in ways other than by providing underlying data, such as by offering a fulsome description of the data and methodology on which the expert relies. See ante, at 8. The agency simply did not do so here.