Costly attention and retirement

In UK data, I document the prevalence of misbeliefs regarding the State Pension eligibility age (SPA) and these misbeliefs predictivity of retirement. Exploiting policy variation, I estimate a lifecycle model of retirement in which rationally inattentive households learning about uncertain pension policy endogenously generate misbeliefs. Endogenous misbeliefs explain 43%-88% of the excessive (given financial incentives) drop in employment at SPA. To achieve this, I develop a solution method for dynamic rational inattention models with history-dependent beliefs. Costly attention makes the SPA up to 15% less effective at increasing old-age employment. Information letters improve welfare and increase employment.