Hello and welcome to Commingle Contingency Staffing Inc. Web site. For over 20 years, the personnel of Commingle Contingency Staffing Inc. (MCSI) has served the Haverhill, Massachusetts, area with a commitment to service and value. We appreciate your interest and look forward to earning your business. MCSI provides qualified personnel for long and short term assignments. We work with your supervisors to match your skill base requirements to our screened candidates. Success is determined by the candidates' ability to exceed your expectations.