Research has identified many behaviors that appear to be related to the employment success of mentally retarded workers. In this study, competitive employment supervisors who were drawn from five entry-level occupations judged the importance and frequency of 23 work-related behaviors. Differences were found between the jobs in the relative importance and frequency of some behaviors. Moreover, there was a set of important core skills that was found to be generally applicable across entry-level jobs. The data are discussed in terms of their relevance for developing employment preparation curricula for entry-level workers.