Individual Fellowships: Are part-time contracts allowed?

It is only allowed to have part-time fellowships for family or personal reasons, so you cannot combine the fellowship with another position either at your fellowship host organisation or elsewhere. The rules about part-time working are clarified in the Annotated Model Grant Agreement page 420 http://ec.europa.eu/research/participants/data/ref/h2020/grants_manual/amga/h2020-amga_en.pdf