About Us

Colleran, O’Hara & Mills was founded by Richard L. O’Hara in 1963, has represented labor organizations, their related fringe benefit funds, and individual union members, both in their employment and in private legal matters. As the complexity and needs of its clients has grown, the firm kept pace in maintaining its status as an innovative and imaginative legal resource center for its clients. The firm takes great pride in the superior quality of its legal work and its commitment to servicing the legal needs of its clients. (It has an AV rating from Martindale-Hubbell Legal Directory as well as a listing in its Bar Register of Preeminent Lawyers.)

Labor Law

Colleran, O’Hara & Mills has over five decades of experience representing labor organizations in both the public and private sector, including all aspects of collective bargaining, contract enforcement through grievance process and arbitration, representation proceedings, elections and the representation of a labor organization as a legal entity and any and all litigation which might attend those functions.

Colleran, O’Hara & Mills continues to service a broad spectrum of clients in the labor movement in the New York Metropolitan Area. Our current union clients include:
Asbestos Workers Union, Local No. 12, Building & Construction Trades Council of Greater New York, Iron Workers District Council of Greater New York, Iron Workers Local Union No. 40, Iron Workers Local Union No. 361, Iron Workers Local Union No. 417, Iron Workers Local Union No. 580, Local 895, PFFA, Larchmont Firefighters, Local F-72 I.A.T.S.E., Long Island Federation of Labor, Local Union No. 7, Bricklayers & Allied Craftsman, New York City Central Labor Council, New York State AFL-CIO, New York State AFL-CIO Directly Affiliated Local Union No. 24730, Stone Derrickmen& Riggers Local No. 197, Transport Workers Union Local 106, Transport Workers Union Local 241, Transport Workers Union Local 252.


Colleran O’Hara & Mills led the way in the areas of pension, health and annuity funds, pre-paid legal services funds, apprenticeship funds, and a range of supplemental funds including vacation funds, additional benefit funds, scholarship funds and mortgage programs for fund participants.
Our current fringe benefit fund clients include:

Architectural, Ornamental and Miscellaneous Metal (“AOMM”) Industry Promotion Fund, Asbestos Workers Union, Local 12 Pension Fund, Welfare Fund, Annuity Fund, AJEF, Holiday & Unemployment Fund, Derrickmen Local 197 Annuity Fund, Welfare Fund, Pension Fund, Vacation Fund and AJEF, Iron Workers Locals 40, 361 & 417 Pension Fund, Health Fund Vacation Fund, Annuity Fund, Topping Out Fund, Iron Workers Locals 40 & 361 Annuity Fund, Joint Apprenticeship Training Fund, Iron Workers Local 417, Training and Educational Fund, Iron Workers Local 580 Pension Fund, Insurance Fund, Annuity Fund, Benefit Fund, Apprentice-Journeyman Educational Fund, Vacation Fund and Supplemental Fund, Iron and Steel Industry Promotion Fund of New York, Marble Industry Trust Fund and Pension Fund, Tile Layers Helpers Local 88 Savings Fund and Vacation Funds, B.A.C., Local 7 Tile Industry Welfare Fund and Annuity Fund, N.Y.S. AFL-CIO Pension Fund and Annuity Fund.


In the past several years, the firm’s litigation practice has become more diversified, successfully representing clients in both federal and state courts. Additionally, the firm continues to litigate commercial and intellectual property issues for American Casting Company, Plainview, New York.

Collective Bargaining

Collective bargaining is an essential component of effective labor representation. Our experience with labor-management relations, along with our understanding of the wants and needs of labor unions, allows us to effectively represent our clients’ interests during collective bargaining negotiations. Our attorneys are dedicated to protecting the needs of our clients through all stages of negotiations, including preparation and bargaining sessions through ratification by the membership._For more than fifty years, COH&M has been involved with the negotiation ofcontracts in the following industries:

  • Structural Steel (from Montauk to Albany)
  • Insulation Stone
  • Marble and Tile
  • Transportation buses, including school service, etc. throughout New York City and all of Long Island and Westchester
  • Ornamental and Architectural Iron Work in New York City, Westchester and all of Long Island
  • Civil Service Firefighters in New York City, Westchester and Long Island