Your CargoCard is valid for a maximum period of three years. The expiry date is printed on the card as 'valid until'. Your employer can renew your CargoCard. There will be no fee to renew a CargoCard that is about to expire.
If the card is not renewed it will automatically be blocked and can no longer be used. If you want to start using a CargoCard again after this has happened you will have to apply for a new card.
Simply follow the regular application procedure with the associated production fee.