From the easyJet website:
"easyJet is a non-refund airline save as provided in our "Conditions of Carriage for Passengers and Baggage" and in the Carrier's Regulations.
easyJet regrets that it is unable to offer refunds in the event of passengers being unable to fly owing to any change in personal circumstances, including but not limited to medical grounds, with the exception of the application of the 24 hour cancellation policy.
In exceptional circumstances, however, easyJet will consider issuing a credit in the event of the bereavement of an immediate family member (mother, father, brother, sister, grandparent or child) provided that the claim and a copy of the death certificate are submitted by post to the easyJet Customer Services Department.
All claims will be assessed entirely at the discretion of easyJet. This credit will be to the value of the original fare paid less an administration fee per passenger per sector and can be used against any future flights on easyJet within the following six month period."
Chris