Objective The purpose of this study was to clarify how the type and industry of longest-held occupations correlate with current work situations and reasons for working.Methods In August 2015, we mailed anonymous, self-administered questionnaires to all 8,075 residents aged 65 and over of a district in Ota Ward, Tokyo, excluding those admitted to institutions. The questionnaire inquired about their basic attributes, current employment status, as well as the type of work and industry of their longest-held occupation. Furthermore, those who were currently employed were asked about their reasons for working. We conducted a multinomial logistic regression analysis with the current employment situation as the dependent variable, and a binary logistic regression analysis with the applicability of individual reasons as the dependent variable.Results A total of 5,184 questionnaires were returned (response rate: 64.2%), and 5,050 were analyzed. For the longest-held form of work, the most common response was full-time and part-time employment (42.7%), and the most common industry was sales and service (24.2%). Roughly 30% of respondents were currently working, with the most common reason being "For a living," followed by "For my health," "To have a purpose in life (ikigai)," and "To contribute to society and build connections." The industry of the longest-held occupation for those currently working was most often self-employment; executive roles in independent businesses, companies, or organizations for those in full-time positions; and professional jobs for those working part-time. For those not currently working, most had been full-time employees or unemployed. With regard to the longest-held occupations, those currently working and who gave the reason "For a living" were most often owners of independent businesses or self-employed, while those stating "For my health," "To have a purpose in life," and "To contribute to society and build connections" had often been full-time employees, executives at a company or organization, or in administrative or technical positions.Conclusion For seniors' employment or social participation to go smoothly, we believe a support that emphasizes individuality would be effective, including an emphasis on their longest-held occupation, which is deeply connected to their health conditions and quality of life in old age.
Keywords: longest-held occupation; senior; social participation; work.