You may compare with the earlier definition with this. Earlier, the definition was for specific categories, i.e., clerical, managerial, etc., of employees, and teachers were not covered in those categories. That is why a judgment went against the teachers. Now the categories have been removed, and now all categories of employees except apprentices are covered by the Gratuity Act. You may go through the Amendment Bill passed by the Parliament in which it is clearly mentioned that the objective of the amendment is to cover the teachers under the Gratuity Act, keeping in view the judgment of the Supreme Court of India.
Accountants, Managers (HR), Clerks are not mentioned in this amendment. It does not mean that these are not covered.
Moreover, the amendment comes into force w.e.f. 03.04.1997 from the date from which educational institutions were covered under the Gratuity Act. A copy of the Bill passed in the Parliament is attached.
Regards
SK