The Professional Librarians Unit (LX) is a systemwide bargaining unit of non-supervisory professional librarians who provide vital services to maintain the highest quality academic, scientific and medical library facilities at all UC campuses. The unit is represented by the American Federation of Teachers (AFT). Currently, the unit includes approximately 400* employees.
Campus breakdown of the bargaining unit follows (numbers are approximate):
| Berkeley | 94 |
| Davis | 46 |
| Irvine | 38 |
| Los Angeles | 104 |
| Riverside | 26 |
| Santa Barbara | 26 |
| Santa Cruz | 24 |
| San Diego | 37 |
| San Francisco | 8 |
*Corporate Personnel System (OLR3) June, 2004
