Projected Number of New Jobs The projected numeric change in employment from to It does not include pay for self-employed workers, agriculture workers, or workers in private households because these data are not collected by the Occupational Employment Statistics OES survey, the source of BLS wage data in the OOH. Most construction laborers and helpers perform physically demanding work. More than fifty 2-year colleges offer construction management or construction technology programs. To ensure that projects are completed on time and under budget, firms require construction managers to oversee them. What Construction Managers Do About this section Construction managers often collaborate with engineers and architects.