The purpose of this study was to measure the organizational commitment values of the four generations working in the early twenty first century workforce. The four generations studied were matures born 1925 to 1942, boomers born 1943 to 1960, thirteenth (Gen X) born 1961 to 1981, and millennial born 1982 to the present. The population of this study included all four generations in the American workplace early in the twenty first century (2005). This study was designed to answer two proposed questions. 1.) Can the four generations in the workforce in 2005 be differentiated by the organizational commitment they hold? 2.) If the four generations working in 2005 can be differentiated, which organizational commitments are the most useful in discriminating among the four generations? Answering the first research question was accomplished by using the t-Test to test for a statistical significance of the mean values of the four generations: There is a statistical significant difference among the four generations toward organizational commitment. As such, the four generations in a multi-generational workforce could be differentiated by the organizational commitment values they hold.