The 36 consecutive months that start at the end of the Trial Work Period. During the Extended Period of Eligibility, any month in which gross earnings are $980 or more (for 2009), an individual’s wages are considered Substantial Gainful Activity (SGA). When an individual’s earning first reach SGA, a three month grace period begins, allowing a beneficiary to continue receiving Social Security Disability Insurance (SSDI) payments regardless of wages. After the three month grace period, an individual will not receive SSDI income benefits for months when wages are at or above SGA. If wages fall below SGA, SSDI payments will resume. Beneficiaries who continue to earn SGA income after the EPE will no longer be eligible for SSDI payments.