Heathrow strikes could scupper holiday plans for thousands at Easter.
Over 3,000 security guards, engineers and firefighters will be balloted this week.
They have so far rejected a 10% pay deal.
If members take strike action it will inevitably cause severe disruption throughout Heathrow,” Unite regional co-ordinating officer Wayne King said.
“This is about need not greed.”
The ballot closes in mid-March.
A Heathrow strike could coincide with the Easter holidays.
Unite general secretary Sharon Graham slammed Heathrow for ‘gross hypocrisy’ over executive pay and bonuses.
Heathrow said: “We are extremely disappointed that Unite is tabling a formal ballot.”
“If strikes do go ahead the pay offer will be withdrawn.”
