When Congress adopted the Civil Rights Act of 1964, one of the problems was the effect of written preemployment tests on equal employment opportunity. Congress sought to strike a balance which would proscribe discrimination but permit the use of tests in selection rocedures. In 1966, the Equal Employment Opportunity Commission adopted guidelines to advise mployers what the law required. Differences between the EEOC and Justice, Labor and the Civil Service Commission produced two different sets of guidelines. The Federal government had a need for a uniform set of principles on the question of the use of tests and other selection procedures. In 1978, The Equal Employment Opportunity Commission, the Civil Service Commission, the Department of Labor, and the Department of Justice jointly adopted uniform guidelines to meet that need, and to apply the same principles to the Federal Government as are applied to other employers. The guidelines incorporate a single set of principles which are designed to assist employers, labor organizations, employment agencies, and licensing and certification boards to comply with requirements of Federal law prohibiting employment practices which discriminate on grounds of race, color, religion, sex, and national origin. They are designed to provide a framework for determining the proper use of tests and other selection procedures.