Summarize the following court judgment. etition (Civil) Nos. 13097 13 176 Of 1984 (Under Article 32 of the Constitution of India). M.S. Ganesh for the Petitioners. V. Kanth	 Ms. Halida Khatun	 C.V. Subba Rao and N.S. Das Bahl for the Respondents. The Judgment of the Court was delivered by 1016 VENKATARAMIAH	 J. The petitioners in these petitions	 80 in number. are employees of the Central Government working in the Central Bureau of Investigation. Some of them are holding the posts of Sub Inspectors	 some are Inspectors and the remaining are the Deputy Superintendents of Police in the Central Investigating Units of the Central Bureau of Investigation. There are two classes of officials amongst those who are holding the posts of Sub Inspectors	 Inspectors and Deputy Superintendents of Police. The first class of those officials to which the petitioners belong consists of those who have been recruited directly to the Central Bureau of Investigation. They are hereinafter referred to as 'non deputationists '. The other class of officials in those cadres consists of those who have been drawn from various State cadres. They are hereinafter referred to as 'deputationists. In this case the dispute relates to the discrimination that has been brought about by the Central Government re garding the Special Pay payable to the two groups of offi cers	 namely	 'deputationists ' and 'non deputationists '. While a Deputy Superintendent of Police who belongs to the category of 'deputationists ' is getting Rs. 150 per month by way of Special Pay	 a Deputy Superintendent of Police who is a non deputationist gets Rs. 100 per month as Special Pay. Similarly while an Inspector belonging to the former catego ry gets Rs. 125 per month as Special Pay	 an Inspector belonging to the latter category gets Rs.75 per month as Special Pay and while a Sub Inspector belonging to the former category gets Rs. 100 per month by way of Special Pay	 a Sub Inspector belonging to the latter category gets Rs.50 per month. The petitioners	 who are non deputation ists	 claim that they should also be paid the same Special Pay which the deputationists are getting with effect from the date on which the deputationists commenced to draw the Special Pay at higher rates. The two groups of officers	 referred to above are all working in the 14 Branches of the Central Bureau of Investi gation which are called Central Investigating Units. It is not disputed that the two sets of officers	 namely the 'non deputationists ' and the 'deputationists ' in the ranks of Sub Inspectors	 Inspectors and Deputy Superintendents of Police discharge the same functions	 duties and responsibil ities in the various Central Investigating Units. They have to travel to different places for purposes of investigation into the several cases entrusted to them. The Special pay that is being paid to the deputationists is in addition to the Deputation Allowance paid to them which is not admissi ble to the non deputationists. The Deputation Allowance is paid to the 1017 deputationists as compensation for the temporary displace ment from their parent cadres occasioned by their deputation to the Central Bureau of Investigation. At present a Deputy Superintendent of Police who is on deputation gets Rs. 150 per month as Deputation Allowance	 an Inspector who is on deputation gets Its. 125 per month as Deputation Allowance and a Sub Inspector who is on deputation gets Rs. 100 per month as Deputation Allowance. It is also alleged that in the non Central Investigating Units of the Central Bureau of Investigation the rates of Special Pay paid to the officers working in the three cadres of Sub Inspectors	 Inspectors and Deputy Superintendents of Police are the same both in the case of deputationists and non deputationists	 but in the case of Central Investigating Units	 however	 to which the petitioners belong the deputationists in all the three ranks get Special Pay at higher rates as stated above. It would also appear that between June	 1976 and August	 1979 the Deputy Superintendents of Police belonging to the cate gory of non deputationists were totally denied the Special Pay of Rs. 150 per month which was being given to the Deputy Superintendents of Police who are on deputation. It is contended by the petitioners that the denial	 of the Special pay at the same rates at which. the deputationists are being paid amounts to violation of Articles 14 and 16 of the Constitution of India. In answer to the above claim of the petitioners it is stated on behalf of the Central Government in the counter affidavit filed by Shri R.S. Nagpal	 Under Secretary to the Government of India	 Ministry of Home Affairs (Department of Personnel and Administrative Reforms) that because the State Governments had revised scales of pay of their staff including the State Police from different dates merging whole or substantial portion of the dearness allowance and because the dearness allowance and the structure of pay scales differed widely from one State to another	 there could not be any comparison between the scales of pay of the deputationists and the scales of pay of the non deputation ists which had been fixed on the recommendation of the Third Pay Commission. It is further stated that the Special Pay was being paid to the deputationists at a higher rate to attract officers of high caliber from their parent depart ments and the arduous nature of their duties. It is well settled by several decisions of this Court that in order to pass the test of permissible classification of persons belonging to the same class into groups for purposes of differential treatment two conditions must be fulfilled	 namely	 that the classification must be founded on an intelligible differentia which distinguishes persons who 1018 are grouped together from others left out of the group and that that differentia must have a rational relation to the object sought to be achieved by the law which brings about discrimination between the two groups. The Deputation Allow ance which is paid to the deputationists with which the petitioners have no quarrel compensates the difficulties which the deputationists may encounter on account of their displacement from their parent departments. The Special Pay	 however	 is not actually paid as compensation for such displacement. This is quite evident from the recent proposal which was submitted to the FOurth Pay Commission by the Government of India. it reads thus: "Considering special nature of duties of Investigating Officers in Central Branches and the fact that they were to remain on extensive tours spreading about 20 days a month	 the rate of special pay for deputationist officers only was raised by Rs.50 p.m. for S.Is	 Inspectors and Dy. P. They get special pay at the following rates: Dy. S.P . . Rs. 150 Inspector . Rs. 125 Sub Inspector . . Rs. 100 There has been a demand that departmental officers posted in Central Branches should also be entitled to the same amount of enhanced special pay which has been sanc tioned to the deputationists. It is considered that this demand is genuine and the Government had desired it should be projected before the Fourth Pay Commission. " It is clear from the foregoing proposal submitted to the Fourth Pay Commission that the Special Pay was being paid at higher rates to the deputationists not because of their displacement from the parent departments but as compensation for the arduous nature of the duties performed by them as Investigating Officers in the Central Branches which includ ed extensive tours spreading over about 20 days a month which they had to undertake. It is not in dispute that the nature of the duties performed by the deputationists as Investigating Officers is the same as the nature of duties performed by the non deputationists as Investigating Offi cers. It is significant that the said proposal which was submitted perhaps during the pendency of this Writ Petition does not 1019 refer to the difference in the rates of pay and dearness allowance which the deputationists were getting as members belonging to the Police departments of different States nor does it state that the Special Pay was being paid for at tracting talent from the State Services. The petitioners have alleged that the non deputationists holding the posts of Sub Inspectors	 Inspectors and Deputy Superintendents of Police are highly qualified persons and are equally talented and this allegation is not properly traversed in the coun ter affidavit. It is seen that pursuant to the recommendation of the Third Pay Commission as accepted by the Central Government both the nondeputationists and the deputationists in the ranks of Sub Inspectors and Inspectors were being paid the same Special Pay with effect from January 1	 1973. On that occasion the Deputy Superintendents of Police of either category were not granted any Special pay. By its letter No. 203/13/76 AVD II dated 21.6	 1976 the Government of India intimated the Director	 Central Bureau of Investigation its decision that the Police officers on deputation to the Central Bureau of Investigation as Deputy Superintendents of Police	 Inspectors and Sub Inspectors and posted in one of the Central Units had been granted Special Pay at the fol lowing rates with effect from the date of issue of the said order: Dy. section P . . Rs. 150 p.m. Inspector . Rs. 125 p.m. Sub Inspector . Rs. 100 p.m. By the aforesaid decision dated 21.6.1976 the Central Gov ernment disturbed the existing parity of Special Pay between non deputationists and deputationists which it had accepted pursuant to the recommendation of the Third Pay Commission	 as stated above	 and commenced the discrimination complained of in this case. The Government Order dated 21.6. 1976 did not give any reason as to why in the case of the deputation ists alone there was an increase in the rates of Special Pay	 but it is clear from its letter written on 6.7.1976 by Shri D. Sen	 Director of the Central Bureau of Investigation to the Superintendents of Police of the Central Units that the Higher Special Pay had been sanctioned in order to compensate to a certain extent the arduous nature of the job which the Investigating Officers had to perform. He stated in the course of the letter thus: "Recently . . we have been able to get higher special pay sanctioned for all the Investigating officers posted in 1020 Central Units. This should compensate them to a certain extent for the arduous nature of the job which they have to perform in a Central Unit . " A reading of that letter does not	 however	 suggest that the Director had noticed that the rates of Special Pay had been increased only in the case of deputationists and not in the case of non deputationists. By its letter dated 2.2.1978 Shri P.C. Sharma	 who was then working as Sub Inspector (now Inspector and one of the Petitioners herein) submitted a representation to the Director requesting that he might also be granted enhanced rate of Special Pay at par with the deputationist Sub Inspectors posted in Central Units with retrospective effect. He pointed out that he had been work ing in one of the Central Units and that he had been per forming the same duties as any of the deputationist officers in the Central Units. He further stated that the job re quirements in the Central Units did not make any distinction between a deputationist and a non deputationist Sub Inspec tor and that often it had been found that assignments of complicated nature had been entrusted to the non deputation ists. Similar representations were made by other Sub Inspec tors and Inspectors who are petitioners before us. Along with his letter dated 8.2.1978 the Superintendent of Police	 Central Bureau of Investigation forwarded to the Central Government eight such representations for the grant of Special Pay at the enhanced rates. On 22.2. 1978 the Minis try of Home Affairs intimated the Superintendent of Police	 Central Bureau of Investigation that the question of grant of Special Pay to the non deputationist Inspectors and Sub Inspectors of the Central Bureau of Investigation working in the Central Branches at the same rates at which it was then admissible to the deputationist officers of the correspond ing ranks had already been taken up with the Department of Personnel & Administrative Reforms and that the Government decision in that regard was Still awaited. On 27.8.1979 the Government of India sanctioned with immediate effect a Special Pay of Rs. 100 per month to the non deputationist Deputy Superintendents of Police in the Central Bureau of Investigation. The question of maintaining parity in the matter of payment of Special Pay between the deputationists and the non deputationists was taken up for consideration at the meeting of the CBI Staff Council presided over by the then Home Minister Shri Zail Singh. The Home Minister as sured the Staff Council that the request of the non deputa tionists would be considered sympathetically by the Govern ment and an early decision would be taken. The said question was again raised at the meeting of the Staff Council on the 30th October	 1982 and at the meeting held on 1021 17.1. On 11.27.1983 the Home Department again wrote to the Superintendent of Police	 Central Bureau of Investiga tion that the question of granting of Special Pay to the non deputationists in the Central Bureau of Investigation at the rates applicable to deputationists was still under consideration with the Government and that its decision would be communicated as and when it was taken. Again on 26.3.1984 the Home Department addressed a letter to all the Superintendents of Police on the subject of Special Pay. It reads thus: No. A. 110 19/6/80 IWSU Government of India Ministry of Home Affairs Department of Personnel & A.R. C.B.I	 Kotah House Hutments	 New Delhi Dated 26.3.84 To The Superintendents of Police	 Central Bureau of Investiga tion	 All Central Units located in Delhi Subject: Grant of special pay of the enhanced rates to the non deputationist Dy. P.	 Inspectors and section Is. working in the Central Branches. Sir	 I have the honour to say that of late a number of representations have been received from departmental offi cers of the level of S.Is. to Dy. P. working in the Central Units	 requesting for special pay at par with the deputationist officers. I am to inform your that a proposal has already been sent to the Government requesting them to sanction higher rates of special pay for non deputationists Dy. Ss. P.	 Inspectors and section Is. while working in the Central Units of C.B.I. The decision when taken will be communicated to all concerned. You are requested to inform all departmental officers suitably in the matter. Yours faithfully	 Sd (R.S. Nagpal) Administrative Officer (E) C.B.I." 1022 It is thus seen that at no point of time there was any suggestion by the Government of India that the non deputa tionists were not entitled to the same treatment with the deputationists as regards Special Pay. On the other hand. the letter addressed to the Fourth Pay Commission by the Home Department which is referred to above clearly stated that: "There has been demand that departmental officers posted in Central Branches should also be entitled to the same amount of enhanced special pay which has been sanc tioned to deputationists. It is considered that this demand is genuine and the Government had desired it should be projected before the Fourth Pay Commission". There appears to be thus no rational explanation for the Government taking up a contrary stand in the counter affidavit filed before us while it had accepted that the demand made by the petition ers	 who were the departmental officers posted in the Cen tral Units	 was a genuine one. From the foregoing discussion it emerges that the Spe cial pay that was being paid to all the officers in the cadre of Sub Inspectors	 Inspectors and Deputy Superintend ents of Police in the Central Investigating Units of the Central Bureau of Investigation has nothing to do with any compensation for which the deputationists may be entitled either on the ground of their richer experience or on the ground of their displacement from their parent departments in the various States	 but it relates only to the arduous nature of the duties that is being performed by all of them irrespective of the fact whether they belong to the category of the 'deputationists ' or to the category of the 'non deputationists '. That being the position. the classification of the officers working in the said cadres into two groups	 namely	 deputationists and non deputationists for paying different rates of Special Pay does not pass the test of classification permissible under Articles 14 and 16 of the Constitution of India since it does not bear any rational relation to the object of classification. In these circumstances	. it is difficult to accept the stand of the Central Government justifying the discriminato ry treatment meted out to the non deputationists as regards payment of Special Pay. We	 therefore	 direct the Central Government to pay the nondeputationists who have been working in the cadres of Sub Inspectors	 Inspectors and Deputy Superintendents of Police in the Central Investigating Units of the Central Bureau of Investigation Special Pay at the same rates at which the deputationists are being paid with effect from the date from which the decision contained in the letter of the 1023 Government of India	 Cabinet Secretariat bearing No. 203/13/76AVD.II dated 21.6.1976 came into force upto date and to pay hereafter Special Pay to all the officers (depu tationists and non deputationists) in the said cadres at the same rates. The arrears of Special Pay payable upto date shall be paid within four months from today. The Writ Petitions are accordingly allowed. No costs.

There are two classes of officials amongst those who are holding the posts of Sub Inspectors	 Inspectors and Deputy Superintendents of Police in the Central Bureau of Investi gation namely (i) who are directly recruited and (ii) those who have been drawn from various State cadres on deputation basis. The deputationists are paid Deputation Allowance as compensation for the temporary displacement from their parent cadres occasioned by their deputation to the Central Bureau of Investigation. Pursuant to the recommendation of the Third Pay Commission as accepted by the Central Govern ment both the Direct recruits and "deputationists" in the rank of Sub Inspectors and Inspectors were paid equal rate of Special Pay from 1.7.73	 while the Dy. Superintendents were not paid anything. Both the direct recruits and the deputationists posted in one of the Central Units were granted Special Pay considering the special nature of duties of investigating officers	 by its letter No. 203/13/76 AUD II dated 21.6.1976. But the Special Pay granted to the deputationists were more in all the three categories. Having failed to get the disparity in the pay ment of Special Pay set aright at the departmental level	 the aggrieved direct recruits (non deputationists) have approached the Supreme Court for justice through their petitions under Article 32 of the Constitution. Allowing the petitions	 the Court	 HELD: It is well settled by several decisions of the Supreme Court that in order to pass the test of permissible classification of persons belonging to the same class into groups for purposes of differential treatment two conditions must be fulfilled	 namely	 that the classification must be founded on an intelligible differentia which distinguishes 1015 persons who are grouped together from others left out of the group and that differentia must have a rational relation to the object sought to be achieved by the law which brings about discrimination between the two groups. [1017G H; 1018A] The Special Pay that was being paid to all the officers in the cadre of Sub Inspectors. Inspectors and Deputy Super intendents of Police in the Central Investigating Units of the Central Bureau of Investigation has nothing to do with any compensation for which the deputationists may be enti tled either on the ground of their richer experience or on the ground of their displacement from their parent depart ments in the various States	 but it relates only to the arduous nature of the duties that is being performed by all of them irrespective of the fact whether they belong to the category of the 'deputationists ' or to the category of 'non deputationists '. That being the position	 the classifi cation of the officers working in the said cadres into two groups	 namely	 deputationists and non deputationists for paying different rates of Special Pay does not pass the test of classification permissible under Articles 14 and 16 of the Constitution of India since it does not bear any ration al relation to the object of classification. [1022D F] The Court directed the Central Government to pay the nondeputationists who have been working in the cadres of Sub Inspectors	 Inspectors and Deputy Superintendents of Police in the Central Investigating Units of the Central Bureau of Investigation Special Pay at the same rates at which the deputationists are being paid with effect from the date from which the decision contained in the letter of the Government of India	 Cabinet Secretariat beaming No. 203/13/76 AVD.II dated 21.6.1976 came into force upto date and to pay hereafter Special Pay to all the officers (depu tationists and non deputationists) in the said cadres at the same rates.) [1022G H; 1023A B]