When charging car rental services anywhere in the world with the MasterCard Corporate Card, card holders will automatically receive full-value rental car coverage for both collisions and loss.
This insurance program covers expenses paid for repair of damage or loss to a rental car, including personal effects, anywhere in the world. Information on this program is available in the MasterCard Guide to Benefits that came with your corporate card, or by calling 1-800-MC ASSIST (1-800-622-7747).
The maximum rental insurance period is thirty (30) days per rental agreement. If a traveler rents a new car, or renews a currently rented car, the insurance is extended thirty (30) days.
Therefore, when offered, Collision Damage Waiver (CDW) coverage should be declined; and will not be reimbursed.
For additional information on Rental Vehicle Insurance see: http://umsystem.edu/ums/fa/management/risk/insurancecoverages-automobile#rental