Technology and knowledge are emerging as core elements of competitiveness for businesses. SMEs lack technology and knowledge, and are also limited in their ability to absorb external knowledge. The government is supporting SMEs' absorption of external knowledge by utilizing retired scientists and engineers, but related research is insufficient. Thus, this study conducted an empirical analysis on the effects of support by retired scientists and engineers at SMEs. Specifically, the study confirmed the effects of company competitiveness and technology development capacities at each stage of technology commercialization. Results of the study confirmed that in an environment where technology competitiveness of SMEs are emphasized, the support of retired scientists and engineers has some effect on the competitiveness of SMEs and their technology development capacity. Therefore, this study suggests important implications for future policy development and execution of related projects.