Summarize the following court judgment. ivil Appeal No. 764 of 1978. From the Judgment and Order dated 5.7.1974 of the Andhra Pradesh High Court in W .A. No. 71 of 1974. H.S. Guru Raja Rao	 section Markendeya	 Mrs. Chitra Marken deya	 G. Seshagiri and Kumari Usha Saraswat for the Appel lants. P.A. Choudhary and T.V.S.N. Chari for the Respondents. The Judgment of the Court was delivered by SINGH	 J. This appeal is directed against the judgment and order of a Division Bench of the High Court of Andhra Pradesh setting aside the order of a learned single Judge	 dismissing the appellant ' writ petition made under Article 226 of the Constitution. The appellants are members of the Andhra Pradesh Engi neering Subordinate Service as supervisors in Category 1 of the Engineering Branch. The Engineering Branch category 1 includes officers	 namely	 Supervisors	 Overseers	 Head Draftsmen	 Civil Draftsmen	 Artists Draftsmen	 Tracers	 Blue Print Operators and Building Mistries. Supervisors are recruited by direct recruitment as well as by promotion from amongst the Overseers. The cadre of supervisors include degree holders in engineering and diploma or licence hold ers. Both perform the same duties and functions in the engineering branch. Promotion to the post of Assistant Engineer	 the next higher post is made from amongst the post of supervisors	 in accordance with the Andhra Pradesh Engi neering Service Rules 1967. Graduate Overseers are given preference in the ratio of promotion to the post of Assist ant Engineer inasmuch as the quota of promotion is four to one from amongst the graduate supervisors and non graduate supervisors. In addition to the disparity in the matter of promotion	 graduate supervisors and non graduate supervisors are granted different pay. 427 On recruitment to the service of supervisors a graduate supervisor is granted higher starting salary than non gradu ate supervisors. Subsequently	 a lower pay scale was pre scribed for the non graduate supervisors. Aggrieved the non graduate supervisors filed two writ petitions in the High Court of Andhra Pradesh under Article 226 of the Con stitution challenging validity of discrimination in pre scribing two different scales of pay. The appellants con tended that diploma holder supervisors were entitled to the same scale of pay as prescribed for the graduate supervisors on the principle of equal pay for equal work as they consti tuted the same service and performed the same duties and functions as those performed by graduate supervisors. The State Government contested their case on the pleading that graduate supervisors and diploma supervisors always remained separate and they were never fused into one service. The two class of employees discharged the same functions and carried out similar duties	 but the State was justified in prescrib ing different pay scales for historical reasons	 and also on the basis of difference in the educational qualifications. Plea of discrimination against non graduate supervisors was denied. A learned Single Judge of the High Court Justice O. Chinnappa Reddy (as he then was) by his judgment and order dated February 26	 1974 held that the State practised invid ious discrimination without there being valid justification between the two categories of supervisors graduates and non graduates. The learned judge allowed both the writ petitions and issued mandamus to the State Government to accord the same scale of pay to the non graduate supervisors as prescribed for the graduate supervisors under the Govern ment Order dated June 13	 1969. On appeals preferred by the State of Andhra Pradesh a Division Bench of the High Court set aside the judgment of the learned Single Judge and dismissed the writ petitions on the finding that the State practised no discrimination and the appellants were not entitled to relief on the principle of equal pay for equal work. Hence this appeal by special leave. This is the second round of litigation by the Diploma holder Supervisors. Earlier they had challenged the grant of higher quota of promotion for graduate Supervisors on the ground that when graduate and non graduate Supervisors	 belong to the same cadre	 and are eligible for promotion	 then giving preferential treatment to graduates amount to denial of equal opportunity to the non graduate Supervisors. This Court in Mohd. Sujat Ali vs Union of India	 ; 	 rejected the challenge holding that two categories of Supervisors were never fused into one class and have throughout remained distinct and apart. The non graduate supervisors have again challenged the 428 disparity in the pay scale prescribed for the two class of supervisors. Since controversy in the present appeals centers round the pay of the Supervisors it is necessary to refer to the history of pay scales prescribed for the Supervisors. Prior to 1958 the scale of pay prescribed for Supervisors was Rs. 100 5 1 250 but directly recruited graduate Supervisors were granted initial starting salary at Rs. 150 on the date of their initial appointment while a diploma holder Supervisor was paid starting salary of Rs. 100 only	 though the same pay scale was prescribed for both the degree holders and diploma holders. On his appointment a graduate supervisor Was designated as Junior Engineer while a non graduate continued to be designated as supervisor. In 1958 the scale of pay of Supervisors was revised to Rs. 100 5 150 7.1/2 20010 300 but graduate Supervisors were continued to be granted higher starting salary at Rs. 180 on the date of their initial appointment. Later	 the starting salary of graduate Supervisors was raised to Rs.200 and their pay was fixed in the pay scale of Rs.200 10 300. In 1961 the scale of pay of Supervisors was again revised according to which non graduate supervisors were granted pay scale of Rs. 180 7.1/2 210 10280 15 400	 while Junior Engineers (graduate Supervisors) were granted the scale of Rs.250 15 400. Though different pay scales were provided for non graduate Supervi sors and graduate Supervisors but the maximum pay for both the categories was maintained at the same level	 irrespec tive of the Supervisor being a graduate or a non graduate. The State Government further revised the pay scale of both the categories of Supervisors by the Government Order No. 173 dated 13th June 1969 according to which the scale of pay of non graduate Supervisors was revised to Rs.200 12 320 16 400 while the scale for Junior Engineers (Graduate Supervisors) was revised to Rs.300 20600. The revised pay scales made substantial difference in the matter of pay between the graduate supervisors and non graduate supervisors	 which gave rise to the disputes before the High Court. Mr. H.S. Gururaja Rao	 learned counsel for the appel lants urged that non graduate supervisors and graduate supervisors constitute the same class as they belong to the same service and both the class of officers are fused into one	 as the two posts are interchangeable. The graduate supervisors are no doubt designated as Junior Engineers but the work and duties of both are the same	 and both set of officers are treated at part for every other purpose. Since the two categories of officers were fused into one	 the State denied equality by prescribing different scales of pay for the non graduate supervisors. Learned counsel further urged that even if the graduate 429 supervisors (Junior Engineers) and non graduate supervisors constitute two different categories	 but since they have been carrying out the same work and performing the same duties carrying the same responsibility	 without any dis tinction the doctrine of equal pay for equal work is fully applicable and on that basis the non graduate supervisors are also entitled to the same pay scales as prescribed for the graduate supervisors (Junior Engineers). Learned counsel emphasised that for application of the principle of equal pay for equal work it is not necessary that the two class of officers must belong to one integrated service instead if the nature of duties and functions of the two posts are identical or similar	 the principle would apply. He referred to a number of decisions	 reference to which will be made at the appropriate stage. Shri P.A. Chaudhry	 learned counsel appearing for the respondent State seriously contested the correctness of the submissions made on behalf of the appel lants and urged that in view of the Constitution Bench decision of this Court in Mohammad Shujat Ali 's case (supra) the appellants are not entitled to any relief. Since the Division Bench of the High Court rejected the appellants ' claim for equal pay in view of the findings of a Constitution Bench of this Court in Mohammad Shujat Ali 's case it is necessary to refer to that case in some detail. In Shujat Ali 's case non graduate supervisors of Andhra Pradesh had challenged validity of the rule which gave preferential treatment to graduate supervisors (Junior Engineers) for promotion to the post of Assistant Engineer on the ground that it violated the equality clause enshrined under Articles 14 and 16 of the Constitution. In that con text	 the question arose whether the preferential treatment given to graduate supervisors was justified on any reasona ble classification or it was arbitrary and irrational. Bhagwati	 J. speaking for the Constitution Bench after considering various decisions of this Court observed as under: "But where graduates and non graduates are both regarded as fit	 and	 therefore	 eligible for promotion	 it is difficult to see how	 consistently with the claim for equal opportu nity	 any differentiation can be made between them by laying down a quota of promotion for each and giving preferential treatment to graduates over non graduate in the matter of fixation of such quota. The result of fixation of quota of promotion for each of the two categories of Supervisors would be that when a vacancy arises in the post of Assistant Engi neer	 which	 according to the quota is re served for graduate Supervisors	 a non 430 graduate supervisors cannot be promoted to that vacancy	 even ' if he is senior to all other graduate Supervisors and more suitable than they. His opportunity for promotion would be limited only to vacancies available for non graduate Supervisors. That would clearly amount to denial of equal opportunity to him. " The above observation would show that the Constitution Bench held that fixation of quota giving preference to graduate supervisors amounted to denial of equal opportunity to the non graduate supervisors. But after making the aforesaid observations the Constitution Bench considered the history of the graduate super visors and non graduate supervisors under the Andhra Pradesh Rules and thereupon	 it record ed findings that the graduate supervisors have always been treated as a distinct and separate class from non graduate supervisors both under the Hyderabad Rules as well as under the Andhra Pradesh Rules and they were never treated as equals. The Bench observed as under: "The pay scale of Junior Engineers was always different from that of non graduate supervi sors and for the purpose of promotion	 the two categories of supervisors were kept distinct and apart under the Andhra Rules even after the appointed day. The common gradation list of supervisors finally approved by the Govern ment of India also consisted of two parts	 one part relating to Junior Engineers and the other part relating to non graduate supervi sors. The two categories of supervisors were thus never fused into one class and no ques tion of unconstitutional discrimination could arise by reasons of differential treatment being given to them. " In view of the aforesaid findings of the Constitution Bench which relate to this very cadre of supervisors	 it is diffi cult to accept the appellants ' contention that the graduate supervisors and non graduate supervisors were integrated into one class of service and that no differential treatment is permissible to the non graduate supervisors. The Consti tution Bench on elaborate discussion held that the equality clause under Articles 14 and 16 of the Constitution was not violated in the matter of promotion of graduate supervisors and non graduate supervisors	 as the graduate supervisors and non graduate supervisors constituted two different classes. The necessary consequence of the Constitution Bench findings are that the classification of Supervisors into two clas 431 ses on the basis of historical reasons is valid and it does not offend Article 14 or 16 of the Constitution. Once the classification is upheld it is difficult to hold that non graduate supervisors are entitled to the same pay scale as prescribed for graduate supervisors as equality in pay is permissible with equals and not with unequals. There is basic difference between the two class of supervisors as graduate supervisors hold degree in Engineering while non graduate supervisors are only Diploma and Licence holder and they have all along been treated differently on the basis of different in educational qualifications. In State of Mysore vs P. Narasingh Rao; 	 the question arose whether two different pay scales could be prescribed for the employees working in the same service on the basis of educational qualification. In the State of Mysore tracers included matriculates and non matriculates. The government prescribed higher pay scale to matriculate tracers although the non matriculates and matriculates tracers both were performing the same duties and functions. The non matriculate tracers challenged the validity of different pay scales on the ground that it violated the guarantee of equality under Articles 14 and 16 of the Con stitution as there was no valid reason for making distinc tion. The High Court accepted their contention and allowed their petition holding that there was no valid reason for making distinction as both matriculate and non matriculate tracers were doing the same kind of work and the denial of different scale of pay was in violation of Articles 14 and 16 of the Constitution. On appeal by the State Government this Court set aside the order of the High Court on the finding that higher educational qualification is a relevant consideration for fixing different pay scales and the clas sification of two grades of tracers did not violate of Article 14 or 16 of the Constitution. The Constitution Bench observed as under: "The provisions of Article 14 or Article 16 do not exclude the laying down of selective tests	 nor do they preclude the Government from laying down qualifications for the post in question. Such qualifications need not be only technical but they can also be general qualifications relating to the suitability of the candidate for public service as such. It is therefore not fight to say that in the appointment to the post of tracers the Govern ment ought to have taken into account only the technical proficiency of the candidates in the particular craft. It is open to the Government to consider also the general educational attainments of the candidates and to give preference to candidates who have a better 432 educational qualification besides technical proficiency of a tracer. " Classification in service rounded on the basis of educa tional and academic qualifications is now well recognised. It is open to the Administration to give preference to a class of employees on the basis of educational qualifica tions having regard to the nature of duties attached to the post for the purposes of achieving efficiency in public services. It is permissible to give preference to degree holders as was held by this Court in Union of India vs Dr. (Mrs.) S.B. Kohli; 	 and State of Jammu & Kashmir vs Triloki Nath Khosa	 ; Since clas sification on the basis of educational qualification is a valid consideration for discriminating in matters pertaining to promotion to the higher post	 there is no reason as to why the same principle is not be applicable for prescribing scales of pay. Having regard to the findings recorded by the Constitution Bench in Mohammad Shujat Ali 's case that gradu ate supervisors and non graduate supervisors constitute two distinct class	 the non graduate supervisors cannot validly claim parity with the graduate supervisors regarding pay scales. The appellants grievance that they have been denied equality in violation of Article 14 or 16 of the Constitu tion is not sustainable. Learned counsel for the appellants urged that even if the appellants ' grievance regarding violation of Articles 14 and 16 of the Constitution is not sustainable	 the appel lants are entitled to the same scale of pay as granted to the graduate supervisors on the principle of 'equal pay for equal work ' enshrined under Article 39(d) of the Constitu tion. He placed reliance on the decision of this Court in Randhir Singh vs Union of India & Ors.	 ; ; P. Savita vs Union of India	 [1985] Supp. SCR 101; Dhirendra Chamoli & Anr. vs State of U.P.	 ; Surinder Singh & Anr. vs Engineer in Chief	 CPWD & Ors. 	 ; Bhagwan Dass vs State of Haryana	 [1987] 4 SCC 634 and Jaipal vs State of Haryana	 [1988] 3 SCC 354. In view of these authorities the learned counsel contended	 there is no justification to disregard the doctrine of 'equal pay for equal work ' as graduate supervisors and the non graduate supervisors both have been doing the same work with the same responsibilities without there being any difference in the duties and functions of the two categories of officers. Article 39(d) contained in part IV of the Constitution	 ordains the State to direct its policy towards securing equal pay for equal work for both men and women. Provisions contained in the Chapter on 433 Directive Principles of State Policy cannot be enforced by courts although the principles contained therein are funda mental in nature for the governance of our country. The court has no power to direct the Legislature to frame laws to give effect to the Directive Principles as contained in Part IV of the Constitution or to injunct the Legislature from making any such law. But while considering the question of enforcement of fundamental rights of a citizen it is open to the court to be guided by the Directive Principles to ensure that in doing justice the principles contained there in are maintained. The purpose of Article 39(d) is to fix certain social and economic goals for avoiding any discrimi nation amongst the citizens doing similar work in matters relating to pay. If the court finds that discrimination is practised amongst two set of employees similarly situated in matters relating to pay	 the court must strike down discrim ination	 and direct the State to adhere to the doctrine of 'equal pay for equal work ' as enshrined under Article 39(d) of the Constitution. Fundamental rights	 and the Directive Principles constitute "conscience	 of the Constitution". The Constitution aims at bringing about a synthesis between 'Fundamental Rights ' and 'Directive Principles of State Policy ' by giving to the former a place of pride and to the latter a place of permanence	 together they form core of the Constitution. They constitute its true conscience and with out faithfully implementing the Directive Principles it is not possible to achieve the welfare State contemplated by the Constitution see Keshavanand Bharti vs State of Kerala	 [1973] 4 SCC 225. In Randhir Singh 's case (supra) and later in Dhirendra Chamoli 's case (supra)	 Surinder Singh 's case (supra)	 Bhagwan Dass 's case (supra). Jaipal 's case (supra) and P. Sativa 's case (supra)	 this Court implemented the principle of 'equal pay for equal work '. The Court granted relief on the principle of equal pay on the basis of same or similar work performed by two class of employees under the same employer even though the two class of employees did not constitute the same service. But in all the aforesaid cases relief was granted only after it was found that discrimina tion was practised in giving different scales of pay in violation of the equality clause enshrined under Article 14 and 16 of the Constitution. The principle of equal pay for equal work was enforced on the premise that discrimination was practised between the two set of employees performing the same duties and functions	 without there being any rational classification. The principle of 'equal pay for equal work ' is not abstract one	 it is open to the State to prescribe different scale of pay for different cadres having regard to nature	 duties	 responsibilities and educational qualifications. Different grades are laid down in service with varying 434 qualification for entry into	 particular grade. Higher qualification and experience based on length of service are valid considerations for prescribing different pay scales for different cadres. The application of doctrine arises where employees are equal in every respect	 in educational qualifications	 duties	 functions and measure of responsi bilities and yet they are denied equality in pay. If the classification	 for prescribing different scales of pay is rounded on reasonable nexus the principle will not apply. But if the classification is rounded on unreal and unreason able basis it would violate Articles 14 and 16 of the Con stitution and the principle of equal pay for equal work	 must have its way. In the decisions reference to which have been made by the learned counsel for the appellants	 this Court granted relief	 after recording findings that the aggrieved employees were discriminated in violation of the equality clause under Articles 14 and 16 of the Constitu tion	 without there being any rationale for the classifica tion. In a number of decisions of this Court the claim for equal pay for equal work has been negatived on the ground that the different pay scales prescribed for persons doing similar or same work is permissible on the basis of classi fication rounded on the measure of responsibilities	 educa tional qualifications	 experience and other allied matters. In Federation of All India Customs and Central Excise Ste nographers (Recognised) vs Union of India; 	 	 Justice Sabyasachi Mukharji said (SCC p. 100 para 7). "There may be qualitative differences as regards reliability and responsibility. Func tions may be the same but the responsibilities make a difference. One cannot deny that often the difference is a matter of degree and that there is an element of value judgment by those who are charged with the administration in fixing the scales of pay and other conditions of service. So long as such value judgment is made bona fide	 reasonably on an intelligible criteria which has a rational nexus with the object of differentiation	 such differentia tion will not amount to discrimination. It is important to emphasise that equal pay for equal work is a concomitant of article 14 of the Constitution. But it follows naturally that equal pay for unequal work will be a negation of that right." The learned Judge further observed: (SCC pp. 104 105 para 11) "The same amount of physical work may entail different 435 quality less it varies from nature and cul ture of employment. The problem about equal pay cannot always be translated into a mathe matical formula. If it has a rational nexus with the object to be sought for	 as reiterat ed before a certain amount of value judgment of the administrative authorities who are charged with fixing the pay scale has to be left with them and it cannot be interfered with by the court unless it is demonstrated that either it is irrational or based on no basis or arrived mala fide either in law or infact. In State of U.P. and Others vs J.P. Chaurasia & Ors.	 ; 	 this Court negatived the claim of Bench Secretaries for equal pay for equal work on the basis of reasonable classification based on merit	 experience and seniority though both set of employees were performing the similar duties and having similar responsibilities. In Mewa Ram Kanojia vs All India Institute of Medical Sciences & Ors.	 Judg. Today 12	 this Court refused to grant relief to the petitioner for parity in pay on the application of the principle of 'equal pay for equal work ' on the ground of reasonable classification on the basis of educational qualifications. In view of the above discussion we are of the opinion that where two class of employees perform identical or similar duties and carrying out the same functions with the same measure of responsibility having same academic qualifi cations	 they would be entitled to equal pay. If the State denies them equality in pay	 its action would be violative of Articles 14 and 16 of the Constitution	 and the Court will strike down the discrimination and grant relief to the aggrieved employees. But before such relief is granted the court must consider and analyse the rationale behind the State action in prescribing two different scales of pay. If on an analysis of the relevant rules	 orders	 nature of duties	 functions	 measure of responsibility	 and education al qualifications required for the relevant posts	 the court finds that the classification made by the State in giving different treatment to the two class of employees is rounded on rational basis having nexus with the objects sought to be achieved	 the classification must be upheld. Principle of equal pay for equal work is applicable among equals	 it cannot be applied to unequals. Relief to an aggrieved person seeking to enforce the principles of equal pay for equal work can be granted only after it is demonstrated before the court that invidious discrimination is practised by the State in prescribing two different scales for the two class of employees without there being any reasonable classifica tion 436 for the same. If the aggrieved employees fail to demonstrate discrimination	 the principle of equal pay for equal work cannot be enforced by court in abstract. The question what scale should be provided to a particular class of service must be left to the Executive and only when discrimination is practised amongst the equals	 the court should intervene to undo the wrong	 and to ensure equality among the similar ly placed employees. The Court however cannot prescribe equal scales of pay for different class of employees. In the instant case the graduate overseers have all along being treated separate entity from the non graduate supervisors and they have been drawing different pay since long. The Constitution Bench has already recorded findings that two set of officers	 namely	 graduate supervisors and non graduate supervisors do not belong to the same class of service and unequal treatment relating to promotion is justified on the basis of educational qualification. There fore the classification made between the graduate supervi sors and non graduate supervisors is reasonable and the State Government did not violate Article 14 or 16 of the Constitution in prescribing different scales of pay for them. In result	 the appeal fails and is accordingly dis missed. There will be no order as to costs. R.S.S. Appeal dis missed.

The appellants are members of the Andhra Pradesh Engi neering Subordinate Service as Supervisors. The cadre of supervisors includes degree holders in Engineering and diploma or licence holders. The appellants are diploma holder supervisors. Their two fold grievance was: (1) dis crimination in the matter of promotion in as much as the quota of promotion is four to one from amongst the graduate supervisors and non graduate supervisors	 respectively; and (2) disparity in the matter of grant of different pay scales to graduate supervisors and non graduate supervisors. For the redressal of their first grievance	 the non graduate supervisors had earlier	 in Mohd. Sujat Ali vs Union of India; 	 	 challenged the validity of the Andhra Pradesh Engineering Service Rules	 1967 which gave preferential treatment to graduate supervisors for promotion to the post of Assistant Engineer. They had con tended that this amounted to denial of equal opportunity to non graduate supervisors thus violating the equality clause enshrined under Articles 14 and 16 of the Constitution. This Court rejected the challenge	 holding that the graduate supervisors had always been treated as a distinct and sepa rate class from non graduate supervisors and that they were never fused into one class. 423 The constant appeal relates to their second grievance and arises out of the writ petition filed by the non gradu ate supervisors in the High Court of Andhra Pradesh chal lenging discrimination in the matter of grant of different pay scales to graduate and non graduate supervisors. Their contention was that they were entitled to the same scale of pay as prescribed for the graduate supervisors on the prin ciple of equal pay for equal work	 as they constituted the same service and performed the same duties and functions as those performed by graduate supervisors. The State Govern ment contested the case on the pleading that graduate super visors and diploma supervisors always remained separate and they were never fused into one service. It was further contended that even though the two class of employees dis charged the same functions and carried out similar duties	 the State was justified in prescribing different pay scales for historical reasons	 and also on the basis of difference in the educational qualifications. The learned Single Judge allowed the writ petition. On appeal by the State	 the Division Bench set aside the judg ment of the learned Single Judge and dismissed the writ petition on the finding that the State practised no discrim ination and the appellants were not entitled to relief on the principle of equal pay for equal work. Before this Court it was contended on behalf of the appellants that (1) the graduate and non graduate supervi sors constituted the same class as they belonged to the same service and both the class of officers were fused into one	 as the two posts were inter changeable; (2)even if the two class of officers constituted two different categories	 since they had been carrying out of the same work and per forming the same duties carrying the same responsibility	 without any distinction	 the doctrine of equal pay for equal work was fully applicable	 and it was not necessary that the two class of officers must belong to one integrated service; and (iii) even if the appellant 's grievance regarding viola tion of Articles 14 and 16 of the Constitution was not sustainable	 the appellants were entitled to the same scale of pay as granted to the graduate supervisors on the princi ple of 'equal pay for equal work ' enshrined under Article 39(d) of the Constitution. Dismissing the appeal	 this Court	 HELD: (1) There is a basic difference between the two class of supervisors as graduate supervisors hold degree in Engineering while non graduate supervisors are only Diploma and Licence holders	 and they have all along been treated differently on the basis of difference in 424 educational qualifications. Classification of Supervisor into two classes on the basis of historical reasons is valid and it does not offend Articles 14 or 16 of the Constitu tion. [431B] Mohammad Sujat Ali vs Union of India	 referred to. (2) Since classification on the basis of educational qualification is a valid consideration for discriminating in matters pertaining to promotion to higher post	 there is no reason as to why the same principle is not applicable for prescribing scales of pay. [432C] (3) Classification in service rounded on the basis of educational and academic qualification is now well recog nised. It is open to the administration to give preference to a class of employees on the basis of educational qualifi cations	 having regard to the nature of duties attached to the post	 for the purpose of achieving efficiency in public services. [432B] Union of India vs Dr. (Mrs.) S.B. Kohli	 ; and State of Jammu & Kashmir vs Triloki Nath Khosa	 ; 	 referred to. (4) The principle of 'equal pay for equal work ' is not an abstract one. It is open to the State to prescribe dif ferent scales of pay for different cadres having regard to nature of duties	 responsibilities and educational qualifi cations. Different grades are laid down in service with varying qualification for entry into a particular grade. Higher qualification and experience based on length of service are valid considerations for prescribing different pay scales for different cadres. [433G H; 434A] State of Mysore vs P. Narasing Rao	 ; 	 referred to. (5) Where two class of employees perform identical or similar duties and carry out the same functions with the same measure of responsibility	 having same academic quali fications	 they would be entitled to equal pay. If the State denies them equality in pay	 its action would be violative of Articles 14 and 16 of the Constitution	 and the Court will strike down the discrimination and grant relief to the aggrieved employees. But before such relief is granted the court must consider and analyse the rationale behind the State action in prescribing different scales of pay. If on an analysis of the relevant rules	 425 orders	 nature of duties	 functions	 measure of responsibil ity	 and educational qualifications required for the rele vant posts	 the court finds that the classification made by the State in giving different treatment to the two class of employees is rounded on rational basis having nexus with the objects sought to be achieved	 the classification must be upheld. Principles of equal pay for equal work is applicable among equals; it cannot be applied to unequals. [435E G] Federation of All India .Customs and Central Stenogra phers (Recognised) vs Union of India; 	 ; State of U.P. v .J.P. Chaurasia; 	 and Mewa Ram Kanojia vs All India Institute of Medical Sciences	 Judg. Today 	 referred to. (6) This Court granted relief in a number of cases after recording findings that the aggrieved employees were dis criminated in violation of the equality clause under Arti cles 14 and 16 of the Constitution	 without there being any rationale for the classification	 even though in some cases the two class of employees did not constitute the same service. [434C] Randhir Singh vs Union of India	 ; ; P. Savita vs Union of India	 ; Dhirendra Chamouli vs State of U.P.	 ; Surinder Singh vs Engineer in Chief CPWD	 ; Bhagwan Dass vs State of Haryana	 [1987] 4 SCC 634 and Jaipal vs State of Haryana	 [1988] 3 SCC 354	 referred to. (7) Article 39(d) contained in Part IV of the Constitu tion	 ordains the State to direct its policy towards secur ing equal pay for equal work for both men and women. Provi sions contained in the Chapter on Directive Principles of State Policy cannot be enforced by courts although the principles contained therein are fundamental in nature for the governance of our country. [432H; 433A] (8) Fundamental rights and the Directive Principles constitute "Conscience of the Constitution". The Constitu tion aims at bringing about a synthesis between "Fundamental Rights ' and 'Directive Principles of State Policy ' by giving to the former a place of pride and to the latter a place of permanence; together they form core of the Constitution. They constitute its true conscience and without faithfully implementing the Directive Principles it is not possible to achieve the welfare State contemplated by the Constitution. [433D] Keshavanand Bharti vs State of Kerala	 [1973] 4 SCC 225	 referred to. 426 (9) The Court has no power to direct the Legislature to frame laws to give effect to the Directive Principles as contained in Part IV of the Constitution or to injunct the Legislature from making any such law. But while considering the question of enforcement of fundamental rights of a citizen	 it is open to the Court to be guided by the Direc tive Principles to ensure that in doing justice the Princi ples contained therein are maintained. [433A B]