The strike started last night due to which airlines who have taken services of AISATS were facing problems in timely loading and unloading of baggage and delivery of luggage to passengers, an airline official at the airport said.
Among the worst affected was Air India, whose baggage handling is done by AISATS.
"We have deployed some of our staff to tackle the situation, but as the number of baggage is large we are finding it difficult to handle the situation," the official said.
The employees are demanding immediate reinstatement of their colleague and also a hike in their salary.
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Meanwhile, AISATS in a statement said it was unable to meet the "unjust" demands of the employees and requested them to return to work.
"At AISATS, our employees' interests are of paramount importance and our endeavour has always been to work together with our employees towards achieving mutual growth.
However, we cannot comply with unjust demands, and therefore request our employees to resume their duties immediately to avoid any further inconvenience to passengers," the statement said.