Building and construction sector has remained driver of economic development in any nation, despite its critical role, many building and construction firms in Benue State continue to experience low employee productivity, skill gaps, and limited career growth opportunities, which undermine overall employee performance. Thus, the study examines the effect of career development practices on employee performance in Benue state with a focus on building and construction companies. The study specifically examined the effect of employee training, career mentoring, career counseling and career advancement on employee performance of building and construction companies. A cross sectional survey design was adopted for the study. Questionnaire was used as the instrument for data collection. Taro Yamane formula was used to determined simple size of 286 from the population of 1003 employees. Simple percentages, mean and standard deviation were used for data presentation and analysis while multiple regression analysis was used to test the extent of the effect of independent variables on the dependent variable. Findings of the study revealed that employee training; career mentoring, career counseling and career advancement all had significant positive effect on employee performance. The study recommended, among others, that the management of building and construction companies in Benue State should invest in continuous and targeted training programs to equip employees with up-to-date knowledge, technical expertise, and practical competencies relevant to their roles. Such capacity-building initiatives will not only enhance employee performance but also improve the quality, safety, and efficiency of building and construction projects.