The Civil Service Commission was responsible for conducting competitive examinations to determine the qualifications of applicants for federal jobs. The Commission also established rules for promotions within the federal civil service and oversaw the implementation of those rules. The Civil Service Commission was responsible for developing and administering a system of efficiency ratings for federal employees and oversaw the implementation of that system.
In addition, the Civil Service Commission worked to protect the rights of federal employees and to promote ethical conduct in the federal government. The Civil Service Commission was abolished by the Civil Service Reform Act of 1978, and its functions were transferred to the Office of Personnel Management (OPM).