There is a need for increased efficiency and effectiveness in the employment of the library's human resources. Performance appraisal can serve as a basis for salary and advancement decisions, career development, and performance improvement. Three criteria for performance appraisal can be distinguished: (1) the trait approach, (2) the job description approach, and (3) the objectives approach--the most specific of the three. Appraisals can assign ratings or provide a narrative statement, but technique and criteria should be chosen according to the purpose of the appraisal. Traditionally, supervisors perform the appraisal duties; peer evaluations, employee evaluations of supervisors, or evaluations by objectives are available alternatives. (KB)