core activity of an establishment

means any activity for which the establishment is set up and includes any activity which is essential or necessary to such activity: Provided that the following shall not be considered as essential or necessary activity, if the establishment is not set up for such activity, namely:— (i) sanitation works, including sweeping, cleaning, dusting and collection and disposal of all kinds of waste; (ii) watch and ward services including security services; (iii) canteen and catering services; (iv) loading and unloading operations; (v) running of hospitals, educational and training Institutions, guest houses, clubs and the like where they are in the nature of support services of an establishment; (vi) courier services which are in nature of support services of an establishment; (vii) civil and other constructional works, including maintenance; (viii) gardening and maintenance of lawns and other like activities; (ix) housekeeping and laundry services, and other like activities, where these are in nature of support services of an establishment; (x) transport services including, ambulance services; (xi) any activity of intermittent nature even if that constitutes a core activity of an establishment