To date the focus of the retirement research has been on identifying the factors that predict older workers' decision to retire from the workforce and the factors related to retirement adjustment and satisfaction. The factors associated with the decision of retired people to return to the labour force have received little attention (Griffin and Hesketh, 2008;Maestas, 2010). This is due, in part, to the fact that unretirement is a relatively recent phenomenon. Historically, when people retired from the workforce, they remained retired. However, in most developed countries, there has been a growing trend towards retired people returning to paid employment.For example, Maestas (2010) found that 26 percent of retired people in the US returned to the workforce. In Australia, Griffin and Hesketh (2008) found the incidence of unretirement to be 38 percent. Schellenberg et al. (2005) found that 22 percent of recent retirees in Canada had engaged in paid work after their retirement. It is now recognized that retirement no longer means permanently leaving the workforce (Adler and Hilber, 2008). In fact, Brown et al. (2010) suggested that working in retirement may become the "new normal" (p. 4).Researchers have identified a diverse array of motives for why older workers continue to work (see, for example, Armstrong-Stassen, 2008;Bal and Visser, 2011;Barnes et al., 2004;Groeneman, 2008; Humphrey et al., 2003;Weckerle and Shultz, 1999). Kooij et al. (2010) classified these work-related motives into three categories: security motives, social motives, and growth motives. Griffin and Hesketh (2008) suggested that work-related variables that act to delay retirement will also influence whether or not a person engages in work activity in retirement. Drawing on the work of Mor-Barak (1995), Armstrong-Stassen and Staats (in press) identified four primary motives for retirees to return to the workforce: financial, social, personal fulfillment, and generative (the opportunity to share one's knowledge and skills with the younger generation). Most of the existing empirical research on post-retirement employment has focused on identifying the factors that predict retirees' decision to return to the labour force in general, and not explicitly to their former workplace (Brown et al., 2010;Giandrea et al., 2010;Griffin and Hesketh, 2008; Lahey et al., 2006;Maestas, 2010;Moen et al., 2000;Park, 2011;Schellenberg et al., 2005). Adler and Hilber (2008) noted that many older workers will retire and then contract back with their former employer. However, we found only one study (Madvig and Shultz, 2008) that specifically investigated the factors related to retirees' desire to return to the organization from which they had retired.The purpose of the present study was to build upon and extend the work of Madvig and Shultz. The sample in the Madvig and Shultz study was primarily men (85%) who had retired from a utility company and included not only people who were fully retired but also those who were working in retirement (20%). The sample in o...