Funds from this grant support the work of Nichole Maestas of the Rand Corporation, who is studying how changes in labor demand affects the employment outcomes of older workers. In earlier work, Maestas has catalogued how older workers often "unretire", re-entering the workforce after a previous exit. Some 60 percent of such workers who unretire end up changing occupations, moving from managerial and professional work to positions in sales, administration, and service provision, positions that are often part-time or offer more flexible scheduling opportunities. Maestas will look at existing datasets to understand the extent to which this phenomenon can be explained by changes in the labor demand for such positions, looking at how growth in industries with large proportions of sales, administrative or service jobs, and the subsequent increase in the demand for workers to fill these jobs, explains employment outcomes for older workers.