The Postdoctoral Scholars Unit (PX) is a systemwide bargaining unit comprised of postdoctoral scholars and postgraduate researchers who work in support of faculty and lecturers. The unit, which includes a total of about 6,760* postdoctoral and postgraduate scholars, is represented by the United Auto Workers (UAW) Local 5810.

An approximate breakdown of the number of postdoctoral scholars and postgraduate researchers at each location is as follows:

Location Headcount
Berkeley 1,108
Davis 710
Irvine 435
LBNL 510
Los Angeles 949
Merced 60
Riverside 235
San Diego 1,192
San Francisco 1,112
Santa Barbara 295
Santa Cruz 154
Total 6,760

*GOA Data, October 2023