The present study applied confirmatory factor analysis in investigating the dimensionality of the Pay Satisfaction Questionnaire. Using a more rigorous and extensive series of tests than has been the case with past research, and employing longitudinal data from 2 samples of workers, the present study supported the 4 dimensions suggested by Heneman and Schwab (1985). The four-factor solution was supported both at Time 1 and Time 2, despite the fact that a compensation intervention occurred between the time intervals. Implications of the results are discussed.