37In that regard, the decisive criterion for determining whether a measure falls within the scope of the concept of ‘employment conditions’ within the meaning of clause 4 of the framework agreement is precisely the criterion of employment, that is to say, the employment relationship between a worker and his or her employer (order of 18 May 2022, Ministero dell’istruzione (Electronic card), C‑450/21, not published, EU:C:2022:411, paragraph 33 and the case-law cited).
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