Contact
- Mailing Address
- Attn: Timothy Custer, Secretary-Treasurer 1050 West Roosevelt RoadWest Chicago, IL 60185
- Phone
- 630-231-6660
Officers 8
-
Brett Bartosik
President/Business Rep
-
Timothy L. Custer
Secretary-Treasurer
-
Mark Burke
Vice President
-
James Pfortmiller
Recording Secretary
-
Ben Assell
Trustee/Business Rep
-
Daniel P. Wilken
Trustee
-
Rick Whitcomb
Trustee/Business Rep
-
Bob Vine
Trustee
An executive officer can send the current list.
Federal Filing
- Members Reported
- 2,419
- Last Report
- 2025
- Form
- LM-2
- File Number
- 21933
Members as the union reported them on its 2025 LM-2 report. Counts may include retirees and associate members.
NLRB cases for Local 673 Elections and unfair labor practice charges on LaborLab Search
Sources 3
- OLMS LM-2 report, 2025 (file no. 021-933) (opens in new tab)
Checked Oct 12, 2026
- OLMS filings for file no. 021-933, labordata.bunkum.us (opens in new tab)
Checked Oct 12, 2026
- Union website (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 Use Suggest an Edit above to tell us what's out of date.