As many as 40 central public sector enterprises including MTNL, Shipping Corporation of India, NMDC and Rashtriya Chemicals and Fertilizers do not have a regular chief executive, Parliament was informed today. "There are 40 central public sector enterprises (CPSEs) which presently do not have a regular chief executive (Chairman\/CMD\/MD)," Minister of State for Heavy Industries and Public Enterprises Babul Supriyo said in a written reply to Rajya Sabha. The minister attributed the main reasons for vacant positions of chief executives in CPSEs to unforeseen vacancies due to resignation\/ death\/ vertical shift of incumbents, non-confirmation\/ non extension of tenure of incumbents or scrapping of the recommended panel by the competent authority. Pending vigilance clearance or approval of the competent authority; court cases; creation of new posts and decision of the administrative Ministry to keep a particular post in abeyance, etc are some other causes for the posts lying vacant. Some of the other CPSEs without regular chief executives are Hindustan Cables, Bramhaputra Valley Fertilizer Corporation, HMT, Eastern Coalfields, Scooters India, ITI, Andrew Yule & Company, among others.