Seven AI employees' unions, representing ground and commercial staff and engineers among others, have called the meeting on November 4.
Air Corporation Employees Union (ACEU), one of these unions, booked the school hall at the Air India Colony in suburban Kalina for the meeting.
On October 30, the personnel department of Air India wrote to the authorities that manage the school and demanded that the permission granted to use the hall be revoked.
ACEU's lawyer Anil Kumar argued that the October 30 communication was arbitrary and unfair.
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In the absence of formal notification from the AI management and the government about the privatisation proposal, the employees merely wished to discuss the likely effects and ramifications of the disinvestment so as to quell their own anxiety, he said.
Air India, on the other hand, argued that it was a private meeting and ACEU could not use the school hall, a property owned by the airline, for it.
The bench accordingly granted an interim injunction (stay) to the October 30 communication issued by AI.
When contacted, an Air India spokesperson said it would abide by the court's order.
On June 28, the Cabinet Committee on Economic Affairs (CCEA) gave an in-principle approval for strategic disinvestment of Air India and five of its subsidiaries.
These seven Air India unions, which have formed 'Air India Union Joint Forum Against Privatisation', have already expressed their opposition to the proposal.