Participants received financial incentives, in the form of waivers, once their earnings reached $200 or self-employment exceeded a total of 40 hours. The provisions of the waiver were in effect for 12 months. During this period, the waivers allowed participants to circumvent mandatory special disability or blindness reviews for SSI applicants earning over $500 per month, which could lead to the determination that the applicant was no longer disabled. The waivers also prohibited employment from counting as a trial work period for SSDI recipients, and prevented an interruption of benefits..