section 12 labor force employment and earnings this presents statistics on the its distribution by occupation industry affiliation supply of demand for conditions chief source these data is current population survey cps conducted us census bureau bls comprehensive historical are available from internet site http www gov home htm published a basis in monthly publication detailed also bureaus decennial types most obtained two methods household interviews or questionnaires reports establishment payroll records each method provides that other cannot suitably popula tion characteristics example readily obtainable only house hold while industrial clas sifications can be derived sample used to gather cal endar week including 12th month