The staff performance evaluation program of McGill University Libraries is based on a hierarchy of objectives in which individual and unit goals are compatible with department, area library, and overall library system goals. Individual goals and performance standards are formulated jointly by the staff member and his or her supervisor according to a prescribed procedure. Unit goals are developed by the work unit according to a similar procedure. Progress toward individual and unit goal achievement is evaluated every 6 months and a formal evaluation document is prepared annually by the supervisor and the staff member and placed in the staff member's personal file. Supervisors are trained in using goal development and evaluation worksheets to conduct individual and group meetings. This publication includes a description of the performance evaluation program, a supervisor's manual for performance evaluation containing a summary checklist of procedures, sample worksheets used in the evaluation procedures, information on the introduction of new staff to performance evaluation, and a sample 3-month probation report for library assistants. (ESR)