Using a variety of published and unpublished data, the Bureau of Labor Statistics identified the manpower problems confronting the construction industry. The purpose of the bulletin is to increase understanding about the problems confronting the industry, to present a basis for developing new policies and programs, and to encourage additional research in the field. To study employment fluctuations, over 80 data tables are provided on details of construction activities, worker mobility, income, weather conditions, and employment distributions by age, race, skill, occupation, and sex. One conclusion of the report is that wage differentials favoring construction workers are due to less favorable working conditions, specifically irregular employment, hazardous work, greater mobility requirements, and lower fringe benefits. (BH)