Thanks for posting a copy of the HC Stay Order. However, the stay is of temporary nature, as the main petition is yet to be decided. The stay can still be got vacated by the Central Government through a revision petition to the same HC or an appeal to the SC.
But as per my interpretation, since the petitioners are two individual parties, not the representatives of all the employers situated within the Indian territories, and also their petition was not of the nature of a PIL, the stay is not likely to have universal application with respect to all the employers of India. So, the stay has to work in their own individual cases, as one of the reliefs asked through their petition, not on all the employers of India.
However, every other employer can be free to get stay on the analogy of the present stay on their own individual petitions, if they file any. It won't affect them automatically, subject further to the interpretation from individual HC to HC and the SC.