The ballot will open on 11 February and close on 1 March.

If members back industrial action, the union's intention would be for a series of one-day strikes strarting from 1 April and throughout the summer.

Prospect will also be asking members to vote on whether they wish to take action short of a strike. This could include:

• instruction to work to rosters
• overtime ban
• refusal of extensions to airport opening hours for non-medical flights
• withdrawal of goodwill.

David Avery, Prospect negotiations officer, said: “Members do not wish to take this action but have been forced into this position by the refusal of ministers to engage on air traffic controllers’ pay.“