You had better have your technical and sight-reading skills in order before showing up to audition. The other form of steady employment is as an applied teacher at a university. Applied is the term used to describe performance oriented courses like private lessons, orchestra, and chamber music ensembles. A clarinet instructor typically teaches 8-15 clarinet students, a clarinet pedagogy course, and coaches a chamber ensemble. However, there are numerous variations on this theme.
Most universities require the applied faculty to perform a recital perhaps once a year.
And most teachers prefer to perform much more than the minimum. Some form permanent ensembles with other faculty members, others do free-lance playing outside the university. Pay and employment prospects are similar to those for musicologists and theorists. Free-lance playing can mean almost anything. Some performers are able to make a decent living through free-lance playing alone.