Identifying predictors of career success is one of the most considered topics in career research and practice. However, the existing literature suggests a vast array of potential predictors that cannot be economically measured. This significantly limits research and practice. To address this issue, we have integrated theoretical and meta-analytic research to propose an integrative framework of career resources, including human capital, environmental, motivational, and career management behavior resources represented by 13 distinct factors. In a multistep process, we have developed the career resources questionnaire to assess these factors in workers and college students. In two studies encompassing 873 workers and 691 students, we have confirmed reliability and factor structure, convergent validity with existing scales, and criterion validity with indicators of subjective and objective career success. The developed measure can provide researchers and practitioners with a reliable, concise, and comprehensive measure to assess the key predictors of career success. </jats:p>