Judgment_paragraph 75 · HK Danmark, acting on behalf of Jette Ring v Dansk almennyttigt Boligselskab (C‑335/11) and HK Danmark, acting on behalf of Lone Skouboe Werge v Dansk Arbejdsgiverforening, acting on behalf of Pro Display A/S (C‑337/11) (C-335/11, C-337/11)

75On the question whether that provision is liable to produce a difference of treatment indirectly based on disability, it must be observed that taking account of days of absence on grounds of illness linked to disability in the calculation of days of absence on grounds of illness amounts to assimilating illness linked with disability to the general concept of illness. However, as the Court said in paragraph 44 of Chacón Navas, the concepts of ‘disability’ and ‘sickness’ cannot simply be treated as being the same.