Reynolds, S., Ridley, N., & Van Horn, C., Ph.D. (2005, August). A Work Filled Retirement: Workers Changing Views on Employment and Leisure. Worktrends, 8.1 (Summer '05).    

“In this report, American workers across the nation describe their expectations of retirement and their views of how older workers are treated in the workplace…A total of 1,232 adults were interviewed for this survey. Respondents who worked full or part time, or who were unemployed and looking for work, received a complete interview. A total of 432 respondents who did not meet these criteria received a short interview that included demographic questions. The results of this report are based on a total of 800 complete interviews with members of the workforce, including 82 people who have retired from their primary job but remain in the workforce. The final results were weighted to match U.S. Census Bureau estimates for age, educational attainment, gender, and race.”