CELEX: 62009CJ0399
Language: en
Date: 2011-06-22 00:00:00
Title: Judgment of the Court (Fourth Chamber) of 22 June 2011.#Marie Landtová v Česká správa socialního zabezpečení.#Reference for a preliminary ruling: Nejvyšší správní soud - Czech Republic.#Freedom of movement for workers - Social security - Agreement on social security entered into by two Member States before accession to the European Union - Member State competent to determine the value of completed periods of insurance - Old-age pension - Supplementary benefit paid solely to nationals and residents of a Member State.#Case C-399/09.

Case C-399/09
      Marie Landtová
      v
      Česká správa socialního zabezpečení
      (Reference for a preliminary ruling from the Nejvyšší správní soud)
      (Freedom of movement for workers – Social security – Agreement on social security entered into by two Member States before accession to the European Union – Member State competent to determine the value of completed periods of insurance – Old‑age pension – Supplementary benefit paid solely to nationals and residents of a Member State)
      Summary of the Judgment
      1.        Social security for migrant workers – Community legislation – Agreement between the Czech Republic and the Slovak Republic
            before their accession in connection with the dissolution of the Czech and Slovak Federal Republic – Old-age pension – Taking
            into account of periods of insurance completed before dissolution 
      (Council Regulation No 1408/71, Annex III(A)(6) and Art. 7(2)(c))
      2.        Social security for migrant workers – Equal treatment – Legislation of a member State permitting payment of a supplement to
            old-age benefit solely to its own nationals residing in its territory – Not permissible – Effects
      (Council Regulation No 1408/71, Arts 3(1) and 10)
      1.        The provisions of point 6 of Annex III(A) to Regulation No 1408/71, as amended and updated by Regulation No 118/97, as amended
         by Regulation No 629/2006, read in conjunction with Article 7(2)(c) thereof, do not preclude a national rule which provides
         for payment of a supplement to old-age benefit when the amount of that benefit, granted pursuant to Article 20 of the bilateral
         agreement between the Czech Republic and the Slovak Republic signed on 29 October 1992 as a measure to regulate matters after
         the dissolution of the Czech and Slovak Federal Republic, is lower than that which would have been received if the retirement
         pension had been calculated in accordance with the legal rules of the Czech Republic.
      
      Given that such an adjustment takes place only when the amount of old-age benefit is higher than that obtained under the provisions
         of the Agreement, what is at issue is not the award of a parallel Czech old-age benefit, nor one and the same period of insurance’s
         being taken into account twice, but merely the elimination of an objectively established difference between benefits from
         different sources.
      
      (see paras 37-38, 40, operative part 1)
      2.        The combined provisions of Article 3(1) and Article 10 of Regulation No 1408/71, as amended and updated by Regulation No 118/97,
         as amended by Regulation No 629/2006, preclude a national rule which allows payment of a supplement to old-age benefit solely
         to Czech nationals residing in the territory of the Czech Republic, but it does not necessarily follow, under European Union
         law, that an individual who satisfies those two requirements should be deprived of such a payment. 
      
      First, such a rule directly discriminates on the ground of nationality. Second, that rule involves a condition of residence
         which essentially affects migrant workers who reside in the territory of Member States other than their State of origin. Accordingly,
         that rule is in breach of the principle of equality of treatment, as referred to in the said Article 3(1), which prohibits
         not only overt discrimination based on the nationality of the beneficiaries of social security schemes but also all covert
         forms of discrimination which, through the application of other distinguishing criteria, lead in fact to the same result.
      
      As regards the consequences in practice for persons disadvantaged by the application of that rule, as long as measures reinstating
         equal treatment have not been adopted, observance of the principle of equality can be ensured only by granting to persons
         within the disadvantaged category the same advantages as those enjoyed by persons within the favoured category, the latter
         arrangements, for want of the correct application of European Union law, being the only valid point of reference remaining.
         As regards the implications for persons in the category of those placed at an advantage by that discrimination, while European
         Union law does not, provided that the general principles of European Union law are respected, preclude measures to re‑establish
         equal treatment by reducing the advantages of the persons previously favoured, nonetheless, before such measures are adopted,
         there is no provision of European Union law which requires that a category of persons who already benefit from supplementary
         social protection should be deprived of it.
      
      (see paras 43-44, 46, 49, 51, 53-54, operative part 2)
JUDGMENT OF THE COURT (Fourth Chamber)
      22 June 2011 (*)
      
      (Freedom of movement for workers – Social security – Agreement on social security entered into by two Member States before accession to the European Union – Member State competent to determine the value of completed periods of insurance – Old-age pension – Supplementary benefit paid solely to nationals and residents of a Member State)
      In Case C‑399/09,
      REFERENCE for a preliminary ruling under Article 234 EC from the Nejvyšší správní soud (Czech Republic), made by decision
         of 23 September 2009, received at the Court on 16 October 2009, in the proceedings
      
      Marie Landtová
      v
      Česká správa socialního zabezpečení,
      THE COURT (Fourth Chamber),
      composed of J.-C. Bonichot, President of the Chamber, K. Schiemann (Rapporteur), L. Bay Larsen, A. Prechal and E. Jarašiūnas,
         Judges,
      
      Advocate General: P. Cruz Villalón,
      Registrar: K. Malaček, Administrator,
      having regard to the written procedure and further to the hearing on 25 November 2010,
      after considering the observations submitted on behalf of:
      –        Ms Landtová, by V. Vejvoda, advokát,
      –        the Czech Government, by M. Smolek and D. Hadroušek, acting as Agents,
      –        the Slovak Government, by B. Ricziová, acting as Agent,
      –        the European Commission, by K. Walkerová and V. Kreuschitz, acting as Agents,
      after hearing the Opinion of the Advocate General at the sitting on 3 March 2011,
      gives the following
      Judgment
      1        This reference for a preliminary ruling concerns the interpretation of Article 12 EC and Articles 3(1), 7(2)(c), 10 and 46
         of Council Regulation (EEC) No 1408/71 of 14 June 1971 on the application of social security schemes to employed persons,
         to self-employed persons and to members of their families moving within the Community, as amended and updated by Council Regulation
         (EC) No 118/97 of 2 December 1996 (OJ 1997 L 28, p. 1) and as amended by Regulation (EC) No 629/2006 of the European Parliament
         and of the Council of 5 April 2006 (OJ 2006 L 114, p. 1) (‘Regulation No 1408/71’), and point 6 of Annex III(A) to Regulation
         No 1408/71.
      
      2        The reference has been made in proceedings between Ms Landtová, a national of the Czech Republic who is resident in that Member
         State, and the Česká správa sociálního zabezpečení (the Czech Social Security Authority: ‘the CSSA’), concerning the amount
         of the partial retirement pension which she was granted by the CSSA.
      
       Legal context
       European Union law
      3        The eighth recital of the preamble to Regulation No 1408/71 states:
      
      ‘Whereas employed persons and self-employed persons moving within the Community should be subject to the social security scheme
         of only one single Member State in order to avoid overlapping of national legislations applicable and the complications which
         could result therefrom.’ 
      
      4        Article 3(1) of Regulation No 1408/71 provides that ‘[s]ubject to the special provisions of this Regulation, persons to whom
         this Regulation applies shall be subject to the same obligations and enjoy the same benefits under the legislation of any
         Member State as the nationals of the State’. 
      
      5        Article 6 of that regulation states:
      
      ‘Subject to the provisions of Articles 7, 8 and 46(4), this Regulation shall, as regards persons and matters which it covers,
         replace the provisions of any social security convention binding either:
      
      (a)      two or more Member States exclusively…
      ...’
      6        Article 7(2) of Regulation No 1408/71 provides:
      
      ‘The provisions of Article 6 notwithstanding, the following shall continue to apply:
      …
      (c) certain provisions of social security conventions entered into by the Member States before the date of application of
         this Regulation provided that they are more favourable to the beneficiaries or if they arise from specific historical circumstances
         and their effect is limited in time if these provisions are listed in Annex III.’
      
      7        The first paragraph of Article 10(1) of Regulation No 1408/71 provides as follows:
      
      ‘Save as otherwise provided in this Regulation invalidity, old-age … benefits … acquired under the legislation of one or more
         Member States shall not be subject to any reduction, modification, suspension, withdrawal … by reason of the fact that the
         recipient resides in the territory of a Member State other than that in which the institution responsible for payment is situated.’
         
      
      8        Annex III to that regulation, headed ‘Provisions of social security conventions remaining applicable notwithstanding Article
         6 of the regulation — Provisions of social security conventions which do not apply to all persons to whom the regulation applies’,
         in point 6 of Part A, headed ‘Czech Republic – Slovakia’, maintains in force, inter alia, Article 20 of the Agreement on Social
         Security of 29 October 1992 between the Czech Republic and the Slovak Republic (‘the Agreement’), one of the measures intended
         to regulate matters after the dissolution of the Czech and Slovak Federal Republic on 31 December 1992.
      
       The Agreement
      9        Article 20(1) of the Agreement provides that ‘periods of insurance completed before the date of dissolution of the Czech and
         Slovak Federal Republic shall be considered to be periods of insurance completed in the contracting State on whose territory
         the employer of the person concerned had its headquarters either on the day of the dissolution, or on the last day before
         that date’.
      
       National law
      10      Article 89(2) of the Constitution of the Czech Republic (Constitutional Act No 1/1993), provides that ‘enforceable decisions
         of the [Ústavní soud (the Constitutional Court)] are binding on all authorities and persons’.
      
      11      Article 28 of Law No 155/1995 on retirement insurance provides that, ‘the insured person has a right to a retirement pension
         where he has completed the necessary period of insurance and, where he has reached retirement age, where appropriate, if he
         satisfies other conditions laid down in this Law’.
      
      12      The Ústavní soud held by judgment of 25 January 2005 (III. ÚS 252/04, ‘the Ústavní soud judgment’) that Article 20(1) of the
         Agreement must be applied in such a way that ‘where a national of the Czech Republic satisfies the statutory conditions for
         entitlement to a pension the amount of which as set by national law (of the Czech Republic) is greater than that laid down
         by [the Agreement], it is for [the CSSA] to ensure that the retirement pension is of an amount equivalent to the higher entitlement
         set by national legislation and to order that the amount of the retirement pension paid by the other contracting party be
         supplemented, taking account of the retirement pension paid by the other contracting party under [the Agreement] in order
         to avoid double payment of two retirement pensions of the same kind, granted on the same grounds by two separate [social security
         institutions]’.
      
      13      In addition to the condition of Czech nationality, the Ústavní soud held that whether a benefit claimant was entitled to rely
         on the abovementioned method of calculation was dependent on a further, cumulative, condition, namely that the claimant should
         be resident in the territory of the Czech Republic.
      
       The dispute in the main proceedings and the questions referred for a preliminary ruling 
      14      Ms Landtová, a national of the Czech Republic who resides in the territory of that State worked from 1964 until 31 December
         1992 in the territory of the Federal Czech and Slovak Republic. After the dissolution of that State, Ms Landtová worked until
         31 August 1993 in the territory of the Slovak Republic, and then, from 1 September 1993, in the territory of the Czech Republic.
      
      15      On 20 June 2006 the CSSA awarded to Ms Landtová a partial retirement pension (‘the old age benefit), to date from 31 March
         2006.
      
      16      The CSSA set the amount of the old age benefit in accordance with Article 20 of the Agreement and concluded that the value
         of the period of insurance completed by Ms Landtová up to 31 December 1992 had to be determined under the rules of the Slovak
         social security scheme since the headquarters of her employer were in the territory of the Slovak Republic.
      
      17      On 14 August 2006 Ms Landtová challenged the amount of the old age benefit awarded to her by bringing an action before the
         Městský soud v Praze (Prague City Court), taking the view that the CSSA had failed to take into account all the periods of
         insurance completed by her.
      
      18      On 23 May 2007 the Městský soud v Praze annulled the CSSA’s decision in accordance with the Ústavní soud judgment, which held
         that where a national of the Czech Republic satisfies the statutory conditions for entitlement to an old age benefit and under
         national law is entitled to a benefit greater than that calculated in accordance with the Agreement, the CSSA is bound to
         award a benefit which is equivalent to the higher entitlement. Consequently, the Městský soud v Praze came to the conclusion
         that the old age benefit paid to Ms Landtová by the CSSA should be adjusted to bring it up to the amount which the applicant
         in the main proceedings could have expected if she had completed the entire period of insurance before 31 December 1992 under
         the Czech Republic social security scheme.
      
      19      The CSSA brought an appeal on a point of law before the Nejvyšší správní soud (Supreme Administrative Court).
      
      20      On 16 January 2008 the Nejvyšší správní soud set aside the judgment of the Městský soud v Praze and referred the case back
         to it for further consideration. The Nejvyšší správní soud questioned whether the Ústavní soud judgment and the preferential
         treatment thereby granted to nationals of the Czech Republic were compatible with the principle of equality of treatment laid
         down in Article 3(1) of Regulation No 1408/71.
      
      21      The Městský soud v Praze adhered to its position and held, on the basis of the Ústavní soud judgment, that the CSSA was required
         to adjust the amount of old age benefit awarded to the applicant in the main proceedings to bring it up to the amount she
         would have been entitled to receive if she had been insured throughout under the Czech social security scheme.
      
      22      The CSSA brought a further appeal on a point of law before the Nejvyšší správní soud, claiming that the obligation to adjust
         old age benefits solely for individuals of Czech nationality residing in the territory of the Czech Republic, where the value
         of the period of insurance completed by such persons when the Czech and Slovak Federal Republic was in existence was determined
         in accordance with Article 20 of the Agreement, is contrary to the principle of equality of treatment laid down in Article
         3 of Regulation No 1408/71. Further, such an obligation also involves taking into consideration Slovak periods of insurance
         in order to raise the amount of Czech old age benefit, whereas Article 12 of Regulation No 1408/71 provides that the same
         period of insurance cannot be taken into account twice.
      
      23      According to the Nejvyšší správní soud, the Ústavní soud judgment requires the CSSA to take into consideration periods of
         insurance completed by the benefit claimant under the social security scheme of the Czech and Slovak Federal Republic, notwithstanding
         the fact that, under Article 20 of the Agreement, the Slovak social security authority is the competent institution. To proceed
         in that way might not only entail changing the test used to determine which State is competent for the purpose of taking into
         account the periods of insurance concerned, but might also lead to one and the same period of insurance being taken into account
         twice.
      
      24      Although the referring court does not dispute the fact that Ms Landtová satisfies all the preconditions for adjusting the
         amount of the old age benefit, it nevertheless regards the requirement of Czech nationality as contrary to Article 12 EC and
         Article 3 of Regulation No 1408/71, since, by its very nature, it places at a disadvantage the nationals of other Member States
         if they satisfy the other conditions for entitlement to the benefit concerned. The question also arises whether the residence
         requirement is compatible with Article 10(1) of Regulation No 1408/71.
      
      25      In those circumstances, the Nejvyšší správní soud decided to stay the proceedings and to refer the following questions to
         the Court for a preliminary ruling:
      
      ‘1.      Must point 6 of Annex III(A) to Council Regulation (EC) No 1408/71 … read in conjunction with Article 7(2)(c) [thereof], according
         to which the criterion for determining the successor state competent to determine the value of periods of insurance completed
         by employed persons before 31 December 1992 under the social security scheme of the Czech and Slovak Federal Republic is to
         remain applicable, be interpreted as precluding the application of a rule of national law which provides that the Czech social
         security institution is to take into account, with regard to entitlement to a benefit and setting the amount thereof, the
         entire period of insurance completed in the territory of the Czech and Slovak Federal Republic before 31 December 1992, even
         though, according to the abovementioned criterion, it is the social security institution of the Slovak Republic which is competent
         to determine the value of that period of insurance?
      
      2.      If the first question is answered in the negative, must Article 12 EC in conjunction with Articles 3(1), 10 and 46 of Regulation
         (EC) No 1408/71 … be interpreted as meaning that the period of insurance completed under the social security scheme of the
         Czech and Slovak Federal Republic before 31 December 1992, which has already been taken into account once to the same extent
         for benefit purposes under the social security scheme of the Slovak Republic, cannot, pursuant to the abovementioned national
         rule, be taken into account in its entirety only in respect of nationals of the Czech Republic resident in the territory of
         the Czech Republic for the purposes of entitlement to old age benefit and setting the amount thereof ?’
      
       Admissibility of the reference for a preliminary ruling
      26      The Slovak Republic expresses doubts as to whether the questions referred are admissible and submits that the interpretation
         of the principle of non‑discrimination requested by the referring court has no relevance to the outcome of the dispute in
         the main proceedings and has no relation to the actual facts of the main action or to its purpose, since Ms Landtová satisfies
         all the preconditions for the payment of the supplement to old age benefit in the Czech Republic, as laid down by the Ústavní
         soud judgment, and is not the victim of any discrimination.
      
      27      According to settled case-law, it is solely for the national court before which the dispute has been brought, and which must
         assume responsibility for the subsequent judicial decision, to determine in the light of the particular circumstances of the
         case both the need for a preliminary ruling in order to enable it to deliver judgment and the relevance of the questions which
         it submits to the Court (see, inter alia, Case C‑466/04 Acereda Herrera [2006] ECR I‑5341, paragraph 47).
      
      28      Consequently, where the questions referred concern the interpretation of European Union law (‘EU law’), the Court is, in principle,
         bound to give a ruling (see, to that effect, Case C‑379/98 PreussenElektra [2001] ECR I‑2099, paragraph 38, and Case C‑169/07 Hartlauer [2009] ECR I‑1721, paragraph 24). That is not the case, where, inter alia, the problem referred to the Court is purely hypothetical
         or where the interpretation or consideration of the validity of a rule of EU law which is sought by the national court has
         no relation to the actual facts of the main action or to its purpose (see, to that effect, Joined Cases C‑92/09 and C‑93/09
         Volker and Markus Schecke [2010] ECR I‑0000, paragraph 40).
      
      29      However, as stated by the Advocate General in point 30 of his Opinion, that is not so in the present case. Although Ms Landtovà
         benefits from the ruling deriving from the Ústavní soud judgment, that judgment has been challenged both by the CSSA and by
         the referring court. 
      
      30      The Court therefore finds that the reference for a preliminary ruling is admissible.
      
       The questions referred for a preliminary ruling
       The first question
      31      By the first question referred, the referring court seeks in essence to ascertain whether the provisions of point 6 of Annex
         III(A) to Regulation No 1408/71, read in conjunction with Article 7(2)(c) thereof, preclude a national rule, such as that
         at issue in the main proceedings, which provides for the payment of a supplement to old age benefit where the amount of such
         benefit, awarded under Article 20 of the Agreement, is lower than that which would have been received if the retirement pension
         had been calculated in accordance with the legal rules of the Czech Republic. 
      
      32      It must be borne in mind that the effect of the abovementioned provisions of Regulation No 1408/71 is to preserve Article
         20 of the Agreement, which establishes that the criterion for the identification of the applicable scheme and the authority
         with competence to grant social security benefits is the country in which the employer was resident at the time of the dissolution
         of the Czech and Slovak Federal Republic.
      
      33      It is evident from the order for reference that the first question referred arises from concerns linked to the risk that applying
         the Ústavní soud judgment may lead to one and the same period of insurance being taken into account twice and may change the
         criterion established in Article 20 of the Agreement.
      
      34      As is apparent from the documents before the Court, the opinion of the Ústavní soud is that Article 20 of the Agreement must
         be interpreted as meaning that the CSSA is obliged, where a Czech national satisfies the statutory conditions for entitlement
         to a pension and the amount of that pension as set under Czech law is higher than that provided for in the Agreement, to ensure
         that the amount of the retirement pension actually awarded to that person is of an amount equivalent to the higher entitlement
         set by national legislation and, consequently, to supplement where necessary, the amount of the retirement pension paid by
         the other contracting party. The CSSA is also obliged to take into account the retirement pension paid by the other contracting
         party under the Agreement in order to avoid double payment of two retirement pensions of the same kind, granted on the same
         grounds by two separate social security institutions.
      
      35      It is clear from the case‑law of the Ústavní soud that the rule on the allocation of competence, as between the Czech and
         Slovak social security institutions for the purpose of taking into account periods of insurance completed before the date
         of the dissolution of the Czech and Slovak Federal Republic, a rule introduced by Article 20 of the Agreement, is neither
         called into question nor affected, since the objective of the case‑law of the Ústavní soud is simply to increase the amount
         of the Czech old age benefit awarded under the Agreement in order to bring it to the level which would have been awarded under
         national law alone.
      
      36      As stated by the Advocate General in point 37 of his Opinion, the supplementary benefit at issue in the main proceedings does
         not affect either the scheme applicable or the competence of the authorities designated in the Agreement, but merely makes
         it possible, pursuant to that Agreement, to apply for supplementary benefit, over and above the general benefit, from another
         social security authority.
      
      37      As submitted by the European Commission, the Ústavní soud simply establishes that it is necessary to bring the amount of the
         Czech old age benefit granted under Article 20 of the Agreement into line with the amount which an insured person could have
         obtained if the amount of that benefit had been calculated in accordance solely with the rules of domestic law, where the
         latter amount is higher than that obtained under the provisions of the Agreement.
      
      38      Accordingly, what is at issue is not the award of a parallel Czech old age benefit, nor one and the same period of insurance
         being taken into account twice, but merely the elimination of an objectively established difference between benefits from
         different sources. 
      
      39      It is clear that such an approach avoids ‘the overlapping of national legislations applicable’, in accordance with the objective
         set out in the eighth recital of the preamble to Regulation No 1408/71, and does not run counter to the criterion for the
         allocation of competence established in Article 20 of the Agreement, which is maintained under Article 7(2)(c) of Regulation
         No 1408/71, read in conjunction with point 6 of Annex III(A) to that regulation.
      
      40      In the light of the foregoing, the answer to the first question referred is that the provisions of point 6 of Annex III(A)
         to Regulation No 1408/71, read in conjunction with Article 7(2)(c) thereof, do not preclude a national rule, such as that
         at issue in the main proceedings, which provides for payment of a supplement to old age benefit where the amount of such benefit,
         awarded under Article 20 of the Agreement, is lower than that which would have been received if the retirement pension had
         been calculated in accordance with the legal rules of the Czech Republic.
      
       The second question
       Whether there is discrimination
      41      By the second question referred, the referring court seeks, in essence, to ascertain whether the Ústavní soud judgment, which
         allows payment of a supplement to old age benefit solely to individuals of Czech nationality residing in the territory of
         the Czech Republic, constitutes discrimination which is prohibited under Article 12 EC and the combined provisions of Articles
         3(1) and 10 of Regulation No 1408/71.
      
      42      It must be borne in mind that the object of Article 3(1) of Regulation No 1408/71 is to ensure, in accordance with Article
         39 EC, equality of treatment in matters of social security, without distinction based on nationality, for the persons to whom
         that regulation applies by abolishing all discrimination in that regard deriving from the national legislation of the Member
         States (Case C‑332/05 Celozzi [2007] ECR I‑563, paragraph 22).
      
      43      The documents before the Court show incontrovertibly that the Ústavní soud judgment discriminates, on the ground of nationality,
         between Czech nationals and the nationals of other Member States. 
      
      44      As regards the requirement of residence in the territory of the Czech Republic, it must be recalled that the principle of
         equality of treatment, as referred to in Article 3(1) of Regulation No 1408/71, prohibits not only overt discrimination based
         on the nationality of the beneficiaries of social security schemes but also all covert forms of discrimination which, through
         the application of other distinguishing criteria, lead in fact to the same result (Celozzi, paragraph 23). 
      
      45      Accordingly, conditions imposed by national law must be regarded as indirectly discriminatory where, although applicable irrespective
         of nationality, they affect essentially migrant workers or the great majority of those affected are migrant workers, where
         they are applicable without distinction but can more easily be satisfied by national workers than by migrant workers, or where
         there is a risk that they may operate to the particular detriment of the latter (see Celozzi, paragraph 24).
      
      46      That applies to a condition of residence, such as that at issue in the main proceedings, which essentially affects migrant
         workers who reside in the territory of Member States other than their State of origin.
      
      47      No evidence capable of justifying such discrimination has been adduced before the Court.
      
      48      Further, it must be recalled that Article 10(1) of Regulation No 1408/71 establishes the principle that residence clauses
         are to be waived by protecting the persons concerned from any negative effect which might be caused by the transfer of their
         residence from one Member State to another.
      
      49      It follows from the foregoing that the Ústavní soud judgment involves a direct discrimination based on nationality and indirect
         discrimination based on nationality, as a result of the residence test, against those who have made use of their freedom of
         movement.
      
       The consequences of the finding of discrimination
      50      It having been established that the rule deriving from the Ústavní soud judgment is discriminatory, the Court must determine
         the practical consequences which ensue, both for persons placed at a disadvantage by the application of that rule and those
         who, like Ms Landtová, have benefited from it.
      
      51      As regards the consequences of failure to observe the principle of equal treatment in a situation such as that in the main
         proceedings, it must be recalled that, where discrimination contrary to EU law has been established, as long as measures reinstating
         equal treatment have not been adopted, observance of the principle of equality can be ensured only by granting to persons
         within the disadvantaged category the same advantages as those enjoyed by persons within the favoured category, the latter
         arrangements, for want of the correct application of EU law, being the only valid point of reference remaining (see Case C‑18/95
         Terhoeve [1999] ECR I‑345, paragraph 57 and the case‑law cited).
      
      52      As regards the implications, for persons, such as Ms Landtová, belonging to the category of those who have benefited from
         the rule deriving from the Ústavní soud judgment, of the finding that that judgment is discriminatory, while, as Czech law
         currently stands, the competent authority for the purpose of granting the pension cannot lawfully refuse to extend entitlement
         to the supplement to those who are placed at a disadvantage, nothing precludes that authority from maintaining that right
         for the category of persons who already benefit from it under the national rule.
      
      53      EU law does not, provided that the general principles of EU law are respected, preclude measures to re‑establish equal treatment
         by reducing the advantages of the persons previously favoured (see Case C‑200/91 Coloroll Pension Trustees [1994] ECR I‑4389, paragraph 33). However, before such measures are adopted, there is no provision of EU law which requires
         that a category of persons who already benefit from supplementary social protection, such as that at issue in the main proceedings,
         should be deprived of it.
      
      54      In the light of the foregoing, the answer to the second question referred is that the combined provisions of Articles 3(1)
         and 10 of Regulation No 1408/71 preclude a national rule, such as that at issue in the main proceedings, which allows payment
         of a supplement to old age benefit solely to Czech nationals residing in the territory of the Czech Republic, but it does
         not necessarily follow, under EU law, that an individual who satisfies those two requirements should be deprived of such a
         payment. 
      
       Costs
      55      Since these proceedings are, for the parties to the main proceedings, a step in the action pending before the national court,
         the decision on costs is a matter for that court. Costs incurred in submitting observations to the Court, other than the costs
         of those parties, are not recoverable.
      
      On those grounds, the Court (Fourth Chamber) hereby rules:
      1.      The provisions of point 6 of Annex III(A) to Council Regulation (EC) No 1408/71 of 14 June 1971 on the application of social
            security schemes to employed persons, to self-employed persons and to members of their families moving within the Community,
            as amended and updated by Council Regulation (EC) No 118/97 of 2 December 1996 and as amended by Regulation (EC) No 629/2006
            of the European Parliament and of the Council of 5 April 2006, read in conjunction with Article 7(2)(c) thereof, do not preclude
            a national rule, such as that at issue in the main proceedings, which provides for payment of a supplement to old age benefit
            where the amount of that benefit, granted pursuant to Article 20 of the bilateral agreement between the Czech Republic and
            the Slovak Republic signed on 29 October 1992 as a measure to regulate matters after the dissolution of the Czech and Slovak
            Federal Republic, is lower than that which would have been received if the retirement pension had been calculated in accordance
            with the legal rules of the Czech Republic.
      2.      The combined provisions of Article 3(1) and Article 10 of Regulation No 1408/71, as amended by Regulation No 629/2006, preclude
            a national rule, such as that at issue in the main proceedings, which allows payment of a supplement to old age benefit solely
            to Czech nationals residing in the territory of the Czech Republic, but it does not necessarily follow, under European Union
            law, that an individual who satisfies those two requirements should be deprived of such a payment. 
      [Signatures]
      * Language of the case: Czech.