A.M. Khanwilkar, J.

1. Rule. Rule made returnable forthwith, by consent. Counsel for the Respondents in the respective petitions waive notice. Taken up for final disposal, by consent.

2. As common questions are involved, these petitions are disposed of by this common Judgment.

3. All these petitions were proceeded together as common questions have been raised in these matters.

4. Writ Petition No.2457 of 2012 is filed by the Union representing Licensed / Approved Aircraft Maintenance Engineers employed by Respondent No.1 throughout India and abroad.

5. Writ Petition No.391 of 2013 is filed by the Union representing Licensed / Approved Aircraft Maintainance technical staff employed by Respondent No.1 throughout India and abroad.

6. Writ Petition (Lodging) No.2896 of 2012 is filed by the Union claiming to be the largest representative organisation of the Aircraft Engineers employed by Respondent No.1.

7. Lastly, Writ Petition (Lodging) No.585 of 2013 has been filed by the employees of Union claiming to represent all the Aircraft Technicians and Foremen category of the erstwhile Indian Airlines Limited employed by Respondent No.1 throughout India and abroad.

8. Notably, t