This grant to Alicia Munnell and her colleagues at the Center for Retirement Research at Boston College supports research on the aging work force through the lens of workers’ socio-economic status (SES). Munnell and her team will launch five integrated projects related to retirement, financial security, and employment opportunities that address the following questions. How long do people need to work to achieve a financially secure retirement? How would retirement ages vary if they reflected differential mortality by socio-economic status? How does job-changing affect the ability to retire securely? How do job opportunities narrow with age? How much would reducing the price of older workers’ labor increase their attractiveness to employers? The project promises fill significant gaps in our understanding of the older work force.