Trillium Construction Services is an employment agency that has been operational since 1984. The company designs and conducts screening, skill testing, background and reference checks programs for applicants. It specializes in professional placement, staffing and payroll services. Trillium Construction Services maintains offices in the Midwest and Southeast. It offers placement services for approximately 1,000 applicants per year. The company is a part of are a part of Trillium Staffing Solutions. Trillium Construction Services uses the TESCOR system for candidate evaluation, which is an internet-based psychological and skill set evaluator system. The company is a member of the American Builders Contractors and the Plumbing-Heating-Cooling Contractors Association.