Aer Lingus is to sue SIPTU over its planned industrial action which was struck down in the High Court earlier this week.

On Wednesday, an injunction prevented trade union members from walking off the job as part of the pensions row.

The Dublin Airport Authority (DAA) and Ryanair argued that a planned four-hour work stoppage by SIPTU this Friday would cost them millions of euro and disrupt thousands of passengers.

However Aer Lingus says the the threat of the strike has left it severely out of pocket.

The High Court blocked the planned four-hour work stoppage tomorrow because of the disruption it would cause, and due to concerns about the validity of the SIPTU ballot.

The proposed action was part of an on-going row about cuts to pension benefits at Aer Lingus and the DAA.

Industry Correpsondent with the Irish Times Martin Wall outlines the reasons why the airline believes it should be compensated.