As indicated in the name, the airlines will not refund non-refundable tickets under any circumstances. If you cancel or change your flight, you will not get your money back. Nonetheless, most airlines will apply the value of your canceled ticket toward the purchase of a new ticket.
Some restrictions apply as to how tickets can be used and purchased.
This holds true even if an employee leaves the company. Nearly all non-refundable fares require the ticket to be purchased within 24 hours of making the reservation. Fares are always liable to change until the reservation is ticketed. For lower fares, a roundtrip ticket is generally, but not always, required. When using your non-refundable ticket towards a new ticket, there are a few things to remember.