In September 2020, Khullar was appointed Executive Director, World Bank, in Washington DC for a period of three years when he was looking after the responsibility of Principal Secretary to the Chief Minister.
The Haryana government on Sunday issued transfer and posting orders for nine IAS officers with immediate effect, including 1991-batch senior bureaucrat Ashok Khemka. Ashok Khemka, principal secretary of Sports and Youth Affairs Department has been posted as principal secretary of Science and Technology Department, where he had been posted earlier as well.