“Don’s ability to see where business needs intersect with legal compliance is well worth taking into your future and he can help cut the cord to the past,” is how one client recently described corporate lawyer Donald J. Rassiger. Having worked in operations and production, as well as having served as Chief Legal Officer of four companies, Don understands how management thinks—a perspective he brings to all matters he handles. His understanding of the difference between business risk and legal risk enables him to find creative solutions that achieve his clients’ desired results while complying with applicable laws, minimizing risk, and saving clients time and money.
Don handles a wide range of corporate matters and transactions, with a particular focus on the construction industry. Chair of our Construction practice group, Don has represented clients on all sides of the table including owners, developers, general contractors, subcontractors, engineers, architects, construction managers, and program managers. In the past five years alone, he has negotiated well over $250 million in construction claims and change orders. In addition, Don routinely assists clients with the Minority and Women-Owned Business (MWBE) certification process with state and local agencies and municipalities.
Through his in-house roles, Don has significant experience in the insurance, bonds, corporate safety and risk management arenas, where he has handled day-to-day management of claims, incident investigation and reporting, policy and procedure, OSHA training, inspections, and compliance, and the drafting, administration, and implementation of environmental health and safety plans. His practice also includes the development of programs for employee background checks, drug and alcohol testing, and fitness for duty programs, whether for onboarding, periodic testing, or post-accident investigations.
Don’s clients also benefit from his strong background in union negotiating: he has negotiated countless collective bargaining agreements and memoranda of understanding with union representatives. His work also includes the defense of employers in labor grievances and arbitrations, as well as the drafting and negotiation of project labor agreements for large construction projects in New York City and Long Island.
Don also serves as the Managing Attorney of the firm’s Corporate department, drawing on his significant experience drafting and negotiating business deals, transactions, and contracts including financing transactions, teaming arrangements, joint ventures, insurance placement, IT matters, bank loans, and construction claims. In addition, he has successfully closed over $2 billion in M&A deals (both acquisitions and divestitures) and strategic investments.
Earlier in his career, Don handled corporate finance matters and commercial transactions for KeySpan (now National Grid), including the lease financing of a 250 Megawatt electric generating station in New York City. Prior to joining CMM, Don served as Senior Vice President and General Counsel of Elecnor Hawkeye, LLC, part of a worldwide conglomerate providing engineering, development, and construction of projects relating to utility infrastructure, new technologies, and renewable energy.
Education
- College of the Holy Cross, B.A.
- Fordham University School of Law, J.D.
Admissions
- New York
- New Jersey
- United States Court of Appeals, Eighth Circuit
- United States District Court, District of New Jersey
Boards, Associations, and Leadership
- Board of Directors, Joe Namath Celebrity Golf Classic, March of Dimes
- President, Executive Board (2012–present); Tournament Director (2014–2016), Crab Meadow Men’s Club
- Chair, Long Island Builders Institute (LIBI) Awards Committee
- Past Board of Directors, National Electrical Contractors Association – Northeast Lines Chapter
Recognitions
- Super Lawyers (2019–2025)
- Leadership in Law Award, Long Island Business News
In the News
- Rassiger quoted in Long Island Business News on Safeguarding Against Tariff Hikes
- CMM Closes Commercial Real Estate Deal for Large Medical Practice
- CMM Closes Pet Industry M&A Deal
- CMM Closes M&A Deal in Construction Space
- 6 CMM Attorneys Recognized as 2024 Super Lawyers® and 4 Named Rising Stars
- CMM Elevates Crane and Rigging Company to Success with Latest M&A Deal
- CMM Closes Sale of Pickleball Facility
- CMM Closes Sale of Northeast Aero Compressor to Leading Designer of Aerospace Parts and Repair Services
- CMM Represents Pure Property Group LLC in its Acquisition of a Property Management Division of a Long Island Business
- CMM Closes Fourth Acquisition for Manufacturing Client in Three Years
- More...
- CMM Closes Multi-Million Dollar Sale of Engineering, Architecture, and Land Surveying WBE
- CMM Closes €11 Million Investment for Client in Belgian Company
- CMM Represents Alure Home Improvements in its Acquisition by Private Equity Firm
- CMM Closes East End Commercial Property M&A Deal
- CMM Closes Complicated Asset Purchase in Collaboration with Tax Advisors
- CMM Closes Sale of Long Island Dance Studio
- CMM Closes Multimillion-Dollar M&A Deal for Long Island Aerospace Business
- CMM Closes M&A and Real Estate Deal with National Franchise for Long Island Company
- CMM Closes International M&A Deal for Dutch Company Specializing in Smoking Products
- CMM Closes M&A Deal for Outdoor Recreational Company in Innovation Park
- CMM Welcomes Donald J. Rassiger to the Partnership
- During Pandemic, CMM Helps Building Information Modeling (BIM) Contractor Move Forward
- CMM Continues Meteoric Growth with Opening of Riverhead Office
- CMM Named a Forbes “Top Corporate Law Firm”
- CMM Closes $12 Million Sale of Boston-Based Scaffolding Contractor to Multinational Conglomerate
- CMM Successfully Guides Third-Generation East End Family Business Through Sale
- CMM Celebrates Grand Opening of Westbury Office with Ribbon-Cutting Attended by Long Island Leaders
- CMM Closes Acquisition of Second U.S. Automotive Glass Business for Canada-Based Clairus Group
- CMM Negotiates Major Advertising Contract with Long Island MacArthur Airport for Premier Radio Broadcast Client
- CMM Swiftly Resolves Impasse with EPA, Allowing Real Estate Deal to Move Forward
- In a Cross-Border Deal, CMM Closes Acquisition of First U.S. Automotive Glass Business for Canada-Based Clairus Group
- CMM Creates Opportunity for Manufacturing Business to Move Forward by Successfully Negotiating Buyout
- CMM Successfully Navigates Complex “Business Divorce” of Family-Owned Real Estate Firm
- CMM Represents Seller of Premier Prosthetics Company to Worldwide Orthopedic Solutions Provider
- CMM Brings Membership Interest Buyout in Construction Management Company to Successful Close
- CMM Swiftly Closes Sale of Family-Owned Business and Negotiates Purchase Price Nearly Double Original Offer
- CMM Settles Prevailing Wage Law Violation for Construction Client, Avoiding Debarment and Keeping Client in Business
- CMM Closes M&A Deal for Major Events Management Company
- CMM Successfully Closes Sale of Prominent Scaffolding Business to Major National Player
- Malafi and Rassiger Both Honored with Leadership in Law Awards
- LIBN names Rassiger to “Who’s Who in Labor Law”
- CMM Closes Multimillion Dollar Financing Transaction for Major Construction & Architectural Hardware Distributor
- CMM Represents ServiceAide, Inc. in Acquisition from CA Technologies
Articles
Lectures & Presentations
New York Institute of Technology: Construction Management & Contract Administration (Guest Lecturer)
RENU Contracting Restoration: NYS Prompt Payment Act Presentation
Engineers Joint Committee Long Island: Ethics and Liability Seminar
New York Institute of Technology: Construction Management & Contract Administration (Guest Lecturer)
