noun
temporary job; stopgap work
A job taken temporarily, often while looking for something better or just to pass time. The metaphor is of perching on a stool before moving on.
今の仕事は腰掛け仕事で、本当にやりたいことではない。
My current job is just a stopgap; it's not what I really want to do.
彼女は
She's working part-time at the reception desk as a temporary job.