Prepared for the Bureau of Labor Statistics by the Bureau of the Census, this report is the 10th in a series of documents on the work experience of the population. The report examines the movements into and out of the labor force as revealed through the 1968 work experience survey and provides a capsule analysis of employment of married men, married women, and teenagers. In addition, the report includes definitions of terms and a series of 27 tables on such topics as the extent of unemployment by age, sex, and color. A major finding of the survey was that 8 out of 10 heads of households worked year around full time. (JS)