From the Comcast website:
Free Cable and OnLine Service
Courtesy Cable - employees are provided with the basic service, all pay services, discounted Pay-Per-View, and two outlets. Eligible employees must be in a Comcast-serviceable area, or an area in which we have a reciprocal agreement with the local cable provider.
Courtesy OnLine Service - Employees living within a Comcast-serviceable area will receive one free cable modem, including installation. Employees are responsible for the purchase of the network interface card (NIC).
*For part-time employees benefits will vary depending upon hours/week.