52. We now sum up our understanding of the law declared in B. Karunakar (supra) and answer the four questions delineated in paragraph 26 (supra) compositely. Reading the declaration of law by the Constitution Bench regarding the imperative need to furnish the report of enquiry to the delinquent employee even when : (i) the relevant statutory rules are silent or against it, (ii) the punishment to be imposed is other than the punishment referred to in clause (2) of Article 311 of the Constitution, (iii) the employee does not ask for it, and (iv) the burden is cast on a private employer too, and the law requiring furnishing of the report being made to operate prospectively from the date the decision in Mohd. Ramzan Khan (supra) was rendered, thereby reinforcing the legal position that prevailed after the GoI Act was enacted but became unsettled later, there can be no two opinions that on and from 20th November, 1990 [i.e., when Mohd. Ramzan Khan (supra) was decided] it is the mandatory requirement of law that the report of enquiry has to be furnished to the delinquent employee.Taking a cue from S.K. Sharma (supra), we are inclined to the view that the requirement of furnishing the report of enquiry, though procedural, is of a mandatory character and the bogey argument of the employer to apply the test of ‘prejudice’ when the report of enquiry is not furnished cannot be of any avail to thwart the challenge of the delinquent employee. Such test could call for application, if from the facts and circumstances, it can be established that the delinquent employee waived his right to have the report furnished. Should satisfactory explanation be not proffered by the employer for its failure/omission/neglect to furnish the enquiry report, that ought to be sufficient for invalidating the proceedings and directing resumption from the stage of furnishing the report. No proof of prejudice for breach of a statutory rule or the principles of natural justice and fair play need be proved, unless there is a waiver, either express or by conduct, to of the right to receive the report. And, it is only in specific and not in all circumstances that proof of ‘prejudice’ ought to be insisted upon.”