27In particular, the Court has pointed out that the degree of importance to be attached to each criterion will necessarily vary according to the activity carried on and the production or operating methods employed in the undertaking, business or part of a business (see judgments in Süzen, C‑13/95, EU:C:1997:141, paragraph 18; Hernández Vidal and Others, C‑127/96, C‑229/96 and C‑74/97, EU:C:1998:594, paragraph 31; Hidalgo and Others, C‑173/96 and C‑247/96, EU:C:1998:595, paragraph 31; and, to that effect, UGT-FSP, C‑151/09, EU:C:2010:452, paragraph 28).
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