Not much by way of benefits for employees placed in contract positions - Mitarbeiter (anonym) bei CompuCom: Mitarbeiterbewertung

They place you in larger companies, but require you sign a non-compete clause that prevents you from becoming a full time employee with the larger company, and they make it very difficult for their customer company to covert a CompuCom contractor to a full time employee. Raises for contact positions have been removed. The only way to get a raise is to get a new position.