Our Firm


O'Reilly, Grosso, Gross and Jones, P.C. is a boutique law firm that focuses on labor and employment law in the construction, trucking and gaming industries. Founded in 1986 by John D. O'Reilly, III and James F. Grosso, the firm represents all of the major employer associations in the construction industry and negotiates master collective bargaining agreements with multiple building trades unions that cover all of New England. In 2000, the firm became O’Reilly, Grosso & Gross, P.C. and on February 1, 2016, the firm name changed to O’Reilly, Grosso, Gross & Jones, P.C. John O’Reilly retired in 2017.


In addition to representing individual employers in all disputes arising from the labor agreements, the firm has represented the Commonwealth of Massachusetts in negotiating Project Labor Agreements for multiple projects at the University of Massachusetts-Boston Campus, the Longfellow Bridge Restoration project, the Whittier Bridge project, and the I-91 Viaduct. The firm continues to represent major bio-pharmaceutical companies in project agreements for their expansion in Boston, Cambridge and Central Massachusetts.


The firm represents individual employers against claims for all forms of employment discrimination, wage and hour violations, prevailing wage issues, unfair labor practices before the National Labor Relations Board and alleged violations of the Occupational Safety and Health Act (OSHA). The firm has also been engaged by a Class 1 Gaming Establishment to represent it in labor negotiations.


The firm is proud of its participation in the economic growth of the Commonwealth through the representation of some of its premier industries.



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