We find that participation in the scheme initially prolongs employment, as participants keep accumulating full pension rights. However, as participants become eligible for early retirement subsequently, these larger financial incentives induce them to leave the labour force prematurely. These adverse incentives are stronger for individuals who reduce their working time most. After two (four) years for men (women), the positive effects reverse. The more favourable effect for women is likely a consequence of their lower opportunities to enter early retirement. The gradual retirement scheme fails the cost-benefit test.