ENEmployee career development has become a critical factor in enhancing labour productivity in contemporary organisations, particularly in the context of dynamic labour markets and increasing competition for qualified employees. This study aims to analyse the relationship between employee career development and labour productivity by integrating theoretical insights with empirical evidence derived from statistical data and prior empirical studies. The research employs a questionnaire survey of employees from medium-sized companies in Lithuania. The findings indicate that career development opportunities, job satisfaction, remuneration and human capital accumulation play a significant role in improving labour productivity. The results further suggest that organisations investing in structured career development practices are more likely to achieve sustainable productivity growth. The study contributes to the existing literature by providing a comprehensive overview of career–productivity linkages in the Lithuanian context and offers practical implications for organisational management and policy development. Keywords: employee career, labour productivity, human capital, job satisfaction, sustainable jobs.