Air1980. Very unlikely to be upgraded even if economy overbooked as they will upgrade fare paying passengers first. VS staff only have a certain ration of upgrades per year so even VS staff will not be upgraded unless they use part of their entitlement.
Edited as re-reading your post I realise you work for Continental. Have not worked for VS for a couple of years, but if Continental still have their allocation of seats, you should be eligible for upgrade.