The purpose of the study was to determine the impact of professional group membership on the rate of adoption of e-learning. The sample consisted of Engineering, Finance, Human Resources, Legal, and Marketing professionals from a Fortune 500 manufacturing company. Professional groups were categorized based on Rogers (1995) five categories of adoption: Laggard, Late Majority, Early Majority, Early Adopter, and Innovator. Survey was the method of data collection. A mail questionnaire was used to measure the rate of adoption e-learning, concerns about e-learning, and specific demographic variables. Data analysis included the use of basic descriptive, multiple regression, and analysis of variance. The statistical analysis was used to investigate the relationship between professional group membership and rate of adoption of e-learning and concerns about e-learning. Results revealed that professional groups do indeed adopt e-learning at different rates but that primary concerns about e-learning were the same. Recommendations for HRD professionals, business managers, and HRD educators and researchers are provided. (Contains 8 tables and 2 figures.)