The design, development, and evaluation of the 12-item Career Commitment Measure (CCM) is reported. Measure construction was conducted in three major phases culminating with a field test of 476 respondents employed in various work settings. Consistent with its predefined content domain, a principal-axes factor analysis of the CCM produced three dimensions: Career Identity, Career Planning, and Career Resilience. Coefficient alpha reliabilities for the three dimensions ranged from .79 to .85. The CCM detected differences in career commitment levels associated with varying degrees of professionalism across occupational groups. Factor analytic results also supported the CCM's discriminant validity. Finally, an analysis of correlate relations generally supported the CCM's construct validity. (C) 1994 Academic Press, Inc.