Baggage handlers at Stansted Airport are to strike over Easter in a row over pay, the GMB union announced.
The move follows an overwhelming vote in favour of industrial action by 150 GMB members employed by Swissport after the union claimed that shift changes would lead to wage cuts of up to £1,000.
The GMB said strikes will be held on Good Friday, Easter Saturday and Easter Monday, threatening disruption to passengers flying on holiday for the holiday break.
A statement from the union said the company was "refusing to listen so far": "I have notified Swissport of the ballot result and I have asked them for more talks to try to avert action over these pay cuts.
"Swissport claim they have lost work on the Ryanair contact at the airport. GMB baggage handlers have seen no evidence of this. Swissport also claim that they are losing money on the contract. GMB has asked to see the evidence to confirm this but Swissport have refused to comply leading members to question if what they are being told is true.
"GMB members consider that Swissport is attempting to make savings at their expense and they are not willing to agree to this. Unless there is urgent talks and a settlement this vote for action this will result in disruption over the Easter Bank Holiday weekend. The travelling public need to be aware that it has been this aggressive move by Swissport to cut our members pay at a time of high inflation that has led to this strike vote. If the strike goes ahead Swissport is entirely to blame for the disruption.”