The Research Support Professionals Unit (RX) is a systemwide bargaining unit of non-supervisory research support professionals who provide highly specialized and complex scientific support for researchers throughout the UC system and the Lawrence Berkeley National Laboratory (LBNL). The unit is represented by the University Professional and Technical Employees union (UPTE). Currently, the unit includes approximately 4,961* employees.

An approximate breakdown of the number of Research Support Professionals at each location is as follows:

Location Headcount
Berkeley 268
Davis (Campus & Med Center) 803
Irvine (Campus & Med Center) 208
LBNL 169
Los Angeles (Campus & Med Center) 1,013
Merced 9
Riverside 89
San Diego (Campus & Medical Center) 1,217
San Francisco (Campus & Medical Center) 1,202
Santa Barbara 71
Santa Cruz 48
Total 5,097

*FTP Data, Oct. 2017