Union Directory
AFSCME Local 3900
Local 3900 · Share · American Federation of State, County and Municipal Employees
Contact
- Mailing Address
- Attn: Leslie Maclean 131 Mount Auburn St.Cambridge, MA 02138
- Phone
- (508) 868-5155 Tracy O'Donnell, President Listed on the 2025 LM-2 report (opens in new tab)
Officers 4
-
Rita Caputo
CO-President
-
Tracy O'Donnell
CO-President
-
Maribeth Beaudoin
Treasurer
-
Debra Clark
Secretary
An executive officer can send the current list.
Federal Filing
- Members Reported
- 3,468
- Last Report
- 2025
- Form
- LM-2
- File Number
- 546981
Members as the union reported them on its 2025 LM-2 report. Counts may include retirees and associate members.
NLRB cases for Local 3900 Elections and unfair labor practice charges on LaborLab Search
Sources 2
- OLMS LM-2 report, 2025 (file no. 546-981) (opens in new tab)
Checked Oct 12, 2026
- OLMS filings for file no. 546-981, labordata.bunkum.us (opens in new tab)
Checked Oct 12, 2026
Listings come from public filings with the U.S. Department of Labor and from the organizations' own websites, as of the dates under Sources. Details change, and we may have them wrong. Check with the organization before you rely on them. Use Suggest an Edit above to tell us what's out of date.