At the beginning of the month more than 3,000 Virgin Atlantic were balloted for industrial action in a dispute over their pay.
The Union claims that orther airlines staff including those of British Airways could earn up to £10,000 per year working on similar flight routes.
The pay negotioations have been ongoing for a number of months now and the Virgin Atlantic staff have until the 20th of December 2007 to get their votes in.
In the event of a yes vote the union has a period of 28 days in which to take action and by law they must give seven days notice of strike action to Virgin Atlantic. Strike action could take place as early as seven days from when the ballot closed on the 20th December right in the middle of the busy Christmas period.
The 20th of December is also the day of the results of the BAA British Airports Authority's strike ballot closes. The union warned that the strike could cause severe airport and airline disruption over the New Year period.