The Manpower Utilization Survey (MUS) conducted by Directorate General of Budget Accounting and Statistics (DGBAS) since year 1978 is a rotating monthly survey. Because of this sampling frame, about a half of the sample in any two consecutive months could be matched. Further, in any given month, about a half of the sample in a given year could be matched with those in the following year. Thus, matching person records across MUS files could result in short panels. Though the matched MUS files have been widely applied in empirical analysis, the limitation of the files has not been discussed yet. By utilizing the 1979-2001 March MUS files, this paper analyzes the determinants of attrition from the MUS. A simple logit model is used to model the depence of match probabilities on a broad set of household and person attributes. The results show that most explanatory variables have significant effect on the match probabilities.