The authors put forward a principle of a technique to support workforce demand planning intended for construction specialists. The construction organization suffers from shortages of skilled labor. The approach assists in evaluating the possibilities of project-to task resource sharing and unpredictabilities in the circulation of new orders, both qualities of building. Construction contractors' manpower planning is based on a production plan. A precise and deterministic strategy is possible just for a brief planning horizon covering a fixed set of acquired orders. New orders are won irregularly, and the type and amount of work they include doubts. For this factor, the authors argue for utilizing a simulation design of the company's production plan. Such a plan assists in mapping the irregularity in the variety of orders, their start dates and delivery times, along with work. Simulating the circulation of orders helps evaluate the degree of usage of the business's human resources and the impact of the size of work on the timeliness of the execution of private jobs. This offers a basis for determining affordable work levels. The method assists identify the demand for workforce and supplies the information needed in the process of staff advancement and recruitment. Moreover, it provides a tool for assessing the expediency of utilizing in-house resources to satisfy brand-new orders and the requirement to employ subcontractors. The novelty provided in the short article is the technique of workforce preparation in construction business, making it possible to take into consideration danger conditions in getting brand-new orders and the irregularity of building and construction procedure execution times due to aspects interrupting the work flow. The principle of the technique was the basis for the development of a simulation design of the construction company's order execution under random conditions, allowing for the evaluation of the impacts of keeping different levels of work of the labor force in regards to the degree of usage of the production capacity and timeliness of private tasks. Thus, the outcome of the research is a tool supporting the decision making of building and construction supervisors in human resources management practice.