Part-time employment or a position that is not full-time; used for roles like part-time lecturers or staff at universities and hospitals.
彼女は非常勤で大学の講義を担当している。
She teaches courses at the university on a part-time basis.
非常勤職員は常勤と待遇が異なる場合がある。
Part-time staff may have different terms of employment compared to full-time staff.
その病院は非常勤の看護師を複数雇っている。
The hospital employs several part-time nurses.