"In respect of employment conditions, part-time workers may not be treated in a less favourable manner than comparable full-time workers solely because they work part-time, unless different treatment is justified on objective grounds.
[...]
social partners and/or Member States after consulting the social partners should identify and review obstacles which may limit the opportunities for part-time work and, where appropriate, eliminate them."
Such directives get translated into law in different ways in different countries, but the overall message is clear.
"In respect of employment conditions, part-time workers may not be treated in a less favourable manner than comparable full-time workers solely because they work part-time, unless different treatment is justified on objective grounds. [...] social partners and/or Member States after consulting the social partners should identify and review obstacles which may limit the opportunities for part-time work and, where appropriate, eliminate them."
Such directives get translated into law in different ways in different countries, but the overall message is clear.