This study characterizes the construction labor pool, and carries out preliminary work toward an estimation of the supply and demand for construction labor. Specifically, it evaluates the composition of the construction labor force by race, age, educational attainment, union membership and employer type, and how that composition is changing over time. It also identifies which industries are most closely related to construction, and estimates labor flows over time by race, place of birth, and age. Finally, the report makes a preliminary evaluation of how skills have changed in the construction labor force over time and how the skill level of the construction labor force changes with changing wages.