The employees of call centres attached to the Indian Airlines in New Delhi went on a strike on Friday to protest against "low" salaries and "lack" of facilities.
None of the 90 employees of the call centres, which employ nearly 400 people, turned up for duty in the morning shift in pursuance of the strike, IA sources said.
The call centre, responsible for ticketing and other tasks of the airlines, is the outsourced unit of IA and had been set up about three months back, they said.
The staffers are demanding a raise in salaries at par with the IA employees, they said.
An IA spokesman claimed the employees resorted to the strike as they had "some differences" with their employers on transportation.
However, the centres were reinforced by the airlines and by afternoon normal work was resumed, he added.