The SNSF may extend this period by at the most 1 year on request if applicants are able to cite good reasons for this. The following reasons are accepted: maternity, paternity, adoption or parental leave; inability to work due to illness or accident; care duties; services that benefit the general public, particularly military or civilian service; continuing education, particularly internships, clinical work and compulsory participation in a doctoral school before starting work on the doctoral thesis.