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In those circumstances, the Tribunale di Napoli decided to stay proceedings and refer the following questions to the Court for a preliminary ruling, the seventh of which was asked only in Cases C‑61/13 and C‑62/13, whilst in Case C‑63/13 it asked only the second to fourth questions, which constitute the first to third questions in that case: ‘1. Does the regulatory framework for the schools sector, as described, constitute an equivalent measure within the meaning of clause 5 of [the Framework Agreement set out in the annex to] Directive [1999/70]? 2. When is an employment relationship to be regarded as being for the public service of the “State”, for the purposes of clause 5 of [the Framework Agreement set out in the annex to] Directive [1999/70] and, in particular, for the purposes of the expression “specific sectors and/or categories of workers”, and thus capable of justifying results that are different from those which ensue from employment relationships in the private sector? 3. Having regard to the details contained in Article 3(1)(c) of [Council] Directive 2000/78/EC [of 27 November 2000 establishing a general framework for equal treatment in employment and occupation (OJ 2000 L 303, p. 16)] and in Article 14(1)(c) of Directive 2006/54/EC [of the European Parliament and of the Council of 5 July 2006 on the implementation of the principle of equal opportunities and equal treatment of men and women in matters of employment and occupation (OJ 2006 L 204, p. 23], does the notion of employment conditions contained in clause 4 of [the Framework Agreement set out in the annex to] Directive [1999/70] also include the consequences of the unlawful interruption of an employment relationship? If the answer to the preceding question is in the affirmative, is the difference between the consequences normally provided for in national law for the unlawful interruption of employment relationships of indefinite duration and for the unlawful interruption of fixed-term employment relationships justifiable under clause 4? 4. By virtue of the principle of sincere cooperation, is a State precluded from presenting to the Court of Justice ... in a request for a preliminary ruling on interpretation a deliberately untrue description of a national legislative framework and are the national courts obliged, in the absence of any alternative interpretation of national law that also satisfies the obligations deriving from membership of the European Union, to interpret, where possible, national law in accordance with the interpretation given by the State? 5. Is a statement of the circumstances in which a fixed-term employment contract may be converted into a permanent contract one of the conditions applicable to the contract or employment relationship contemplated by Directive [91/533], in particular, by Article 2(1) and (2)(e) thereof? 6. If the answer to the preceding question is in the affirmative, is a retroactive amendment to the legislative framework which does not guarantee that employees can claim the rights conferred on them by [Directive 91/533], that is to say, that the conditions of employment specified in the document under which they were engaged will be observed, contrary to Article 8(1) of Directive [91/533] and to the objectives of that directive, in particular those mentioned in the second recital of the preamble thereto? 7. Must the general principles of [EU] law presently in force concerning legal certainty, the protection of legitimate expectations, equality of arms in proceedings, effective judicial protection, the right to an independent court or tribunal and, more generally, the right to a fair hearing, which are guaranteed by [Article 6 TEU], … read in conjunction with Article 6 of the [ECHR], and with Articles 46, 47 and 52(3) of the Charter of Fundamental Rights of the European Union …, be interpreted as precluding, within the scope of Directive [1999/70], the adoption by the Italian State, after a significant period of time (three and a half years), of a legislative provision — such as Article 9 of Decree-Law No 70[/2011], converted by Law No 106 of 12 July 2011, which added to Article 10 of Legislative Decree No 368/2001 a paragraph 4a — which is liable to alter the consequences of ongoing proceedings by placing the worker directly at a disadvantage and benefiting the State in its capacity as employer, and by eliminating the possibility conferred by the national legal system of penalising the abusive repeated renewal of fixed-term contracts?’