[3] Khemka is known for his role in addressing alleged irregularities in various departments he served, including investigations into land deals during the tenure of former Haryana Chief Minister Bhupinder Hooda.

[19] In May 2022, former Haryana IAS officer Roshan Lal, former chairman of a committee for selecting candidates in the Haryana State Warehousing Corporation (HSWC) during Ashok Khemka's tenure as managing director, accused Khemka of appointing ineligible candidates as managers (Grade-I) based on dubious considerations, causing a breach of trust.

[23] As the Managing Director of Haryana Seeds Development Corporation Limited, Khemka exposed its irregularities in just five months as its head following which he was transferred on 4 April 2013 and was replaced by B. S. Duggal, a Deputy Secretary five ranks below him.

[9] The State Government constituted an Inquiry Committee of three senior IAS officers to nail Khemka on the cancellation of Vadra's land deal in the village Sikhohpur (Gurgaon).

[24] Rao Inderjit Singh, a member of the Lok Sabha from Gurgaon has said that a detailed inquiry must be conducted to "substantiate or refute" the charges against Robert Vadra, whose business deals with real estate major DLF have been questioned by Ashok Khemka.

He said that Mr Vadra's land dealings should be part of a larger investigation into alleged irregular practices in the government's appropriation and sale of nearly 1200 acres.

[25] Following his expression of apprehensions regarding the unlawful appropriation of land by Robert Vadra, (Priyanka Gandhi's spouse), Khemka claimed that he had been subjected to threats on his life.

A significant concern was raised regarding questionable land transactions involving Robert Vadra, the son-in-law of Congress president Sonia Gandhi.

[26] In November 2023, the Haryana Government designated TVSN Prasad, the Financial Commissioner of Revenue, to address a series of grievances lodged by Ashok Khemka concerning the conduct of another official, Sajeev Verma.