Contact
- Mailing Address
- Attn: William Hennessey 501 William Floyd ParkwayShirley, NY 11967
- Phone
- (631) 395-0600 William M Hennessey, President Listed on the 2025 LM-2 report (opens in new tab)
Officers 4
-
William Hennessy
President
-
Jr., Henry Hennessy,
Secretary-Treasurer, Officer
-
Richard Dombrowski
Officer
-
Adam Harris
Officer
An executive officer can send the current list.
Federal Filing
- Members Reported
- 11,402
- Last Report
- 2025
- Form
- LM-2
- File Number
- 55651
Members as the union reported them on its 2025 LM-2 report. Counts may include retirees and associate members.
NLRB cases for International Longshoremen's Association (ILA) Elections and unfair labor practice charges across the whole union, on LaborLab Search
Sources 2
- OLMS LM-2 report, 2025 (file no. 055-651) (opens in new tab)
Checked Oct 12, 2026
- OLMS filings for file no. 055-651, 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 Use Suggest an Edit above to tell us what's out of date.