When looking at articles written about academic library issues, a reader quickly notices that discussions of faculty status and tenure for librarians have occupied a prominent place. Should librarians be considered faculty when they work for colleges or universities? If so, should they be offered tenure? And if they are offered the chance to achieve tenure, how should they be evaluated? Or are faculty status and tenure things that are irrelevant to the pursuit of librarianship and unnecessary diversions from what we should be most concerned about? These questions have been answered differently at different institutions. When considering a position at an academic library, you should understand how librarians are employed and evaluated at that library and whether the situation is one that matches your interests
Nolan, Christopher. “Tenure-Track or Tenure Trap.” In Priscilla K. Shontz, ed. The Librarian's Career Guidebook. Lanham, MD: Scarecrow Press, 2004, pp. 281-290.