The workers provide baggage screening for Trans-Atlantic and European flights for some of the biggest airlines at the airport, including Emirates, American Airlines, Virgin and Thomas Cook.
They are in a dispute with their employer, airport security firm International Consultants on Targeted Security (ICTS), about a pay offer, rejected by 77% of Unite members. Unite said the offer would have meant colleagues at Edinburgh Airport, performing exactly the same roles, would be earning 9 pence an hour more.
It said ICTS workers at Glasgow airport also have a worse deal than Edinburgh workers when it comes to bank holiday and shift allowance supplements.
Unite regional officer Pat McIlvogue said: “We believe it is reasonable that Glasgow Airport ICTS workers should be treated no differently from fellow workers at Edinburgh Airport doing exactly the same job. This is a simple question of fairness.”
Unite said it remains hopeful that a remedy can be found, with further talks planned for August 9.
“However ICTS management should be under no illusions of the determination of our members to get what they rightfully deserve, which is parity with their colleagues in Edinburgh,” added McIlvogue.
