Social Security Disability Insurance (SSDI) provides income replacement to individuals who are largely unable to work because of a long-lasting health condition. SSDI participants who earn above a substantial gainful activity (SGA) threshold have their benefits suspended, following a Trial Work Period. A proposed “benefit offset” would instead reduce SSDI benefits by $1 for every $2 earned above the SGA threshold. This report describes two approaches to estimating the induced entry effects of the proposed policy.