37In addition, it has been held that, even if it does not affect the material interests and/or rank of the staff member concerned, a change of duties may, in so far as it alters the conditions for the performance of his duties and also the nature of those duties, impair his non-material interests and future prospects and thus adversely affect him (judgment of 8 May 2008 in Kerstens v Commission, F‑119/06, EU:F:2008:54, paragraph 45 and the case-law cited).
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