Travel disruption has been blamed on people wanting to work at home and make "easy money" by an airline boss.
On Monday the head of Qatar Airways criticised the "epidemic" of home working and said it had contributed to staff shortages that are being widely blamed for travel disruption in Europe this summer.
The aviation sector is struggling to secure staff needed to cope with a post-pandemic surge in air travel, prompting London's Heathrow Airport to impose curbs on capacity to avoid delays.