PensionBee analysis of Form 5500 data suggests that over 30% of all 401(k) and 403(b) accounts may be dormant NEW YORK, Jan. 21, 2026 (GLOBE NEWSWIRE) -- Nearly one in three workplace retirement accounts may sit dormant, according to new research released today by PensionBee. The study, which analyzed U.S. Department of Labor (DOL) data from 2012 to 2023, reveals that the growth of forgotten or left-behind 401(k) and 403(b) accounts has significantly outpaced the growth of active accounts opened in the last ...