THE PURPOSE OF THIS STUDY WAS TO BUILD A SET OF MEASURES WHICH WOULD PROVIDE INSIGHT INTO PEOPLE'S "MOTIVATION TO WORK." A SYSTEMATIC 10 PERCENT SAMPLE, 1,958 PERSONS, WAS DRAWN FROM THE REGISTERED POPULATION OF THE NEWARK EMPLOYMENT SERVICE IN LATE 1964. A SAMPLE OF 500 PERSONS, CLASSIFIED INTO EIGHT CATEGORIES ON THE BASIS OF A PREVIOUS MANPOWER AND DEVELOPMENT TRAINING ACT (MDTA) STUDY (VT 002 654), WAS INTERVIEWED BY USE OF SIX INSTRUMENTS DEVELOPED FOR THIS STUDY WHICH MEASURED (1) MOTIVE TO WORK, (2) EXPECTANCY TO WORK, (3) INCENTIVE TO WORK, (4) MOTIVE TO AVOID WORK, (5) EXPECTANCY TO AVOID WORK, AND (6) INCENTIVE TO AVOID WORK. SCORES FROM THE FIRST THREE INSTRUMENTS WERE MULTIPLIED TO FORM A MATHEMATICAL PRODUCT, "MOTIVATION TO WORK," AND SCORES FROM THE SECOND THREE INSTRUMENTS WERE MULTIPLIED TO FORM A MATHEMATICAL PRODUCT, "MOTIVATION TO AVOID WORK." THE DIFFERENCE BETWEEN THESE MATHEMATICAL PRODUCTS WAS "RESIDUAL BEHAVIOR-POTENTIAL TO WORK." SOME FINDINGS WERE--(1) AMONG THOSE WHO HAD COMPLETED MDTA TRAINING, THERE WERE LOWER PROPORTIONS OF INDIVIDUALS WITH HIGH MOTIVE TO WORK AND HIGHER PROPORTIONS WITH HIGH MOTIVE TO AVOID WORK, (2) THE EMPLOYED TENDED TO SCORE RELATIVELY HIGH ON MOTIVE TO WORK AND EXPECTANCY TO WORK, AND LOW ON MOTIVE TO AVOID WORK, EXPECTANCY TO AVOID WORK, AND INCENTIVE TO AVOID WORK, AND RELATIVELY LOW ON INCENTIVE TO WORK. IT WAS CONCLUDED THAT THE BEHAVIOR-POTENTIAL TO WORK MEASURE DID SHOW SIGNIFICANT RELATIONSHIPS, THOUGH OF SMALL SIZE, WITH THOSE VARIABLES WHICH COMMON SENSE SUGGESTS ARE RELATED TO MOTIVATION TO WORK, AND THAT POSITIVE AND NEGATIVE RELATIONSHIPS RAN IN THE EXPECTED DIRECTION. A SAMPLE INSTRUMENT AND A DESCRIPTION OF THE STUDY SAMPLE ARE INCLUDED. (EM)