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Standing photo of Employment Law attorney Peter Callaghan

Peter G. Callaghan,
Director
pcallaghan@preti.com

Concord, NH 603.410.1500
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Services

  • Litigation
  • Employment Law
  • Professional Liability
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Admissions

  • New Hampshire
  • U.S. District Court, District of New Hampshire
  • U.S. Court of Appeals, First Circuit
  • U.S. Court of Appeals, Second Circuit

Education

  • Villanova University School of Law (J.D., 1989)
  • Villanova University (B.A., magna cum laude)
    • Phi Beta Kappa

Publications

December 14, 2022
President Biden Signs Speak Out Act
February 9, 2021
Answering Employer COVID-19 Vaccination Questions
April 3, 2020 Article
DOL Provides Guidance on Exemption from Paid Leave for Small Businesses
March 24, 2020 Article
Return to Work Protocol for Workers Following an Absence Due to COVID-19
March 18, 2020 Article
Alert: COVID-19 Update for ME and NH Employers
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Firm Highlights

News

Preti Flaherty Welcomes Three Lateral Attorneys to the Firm

New England-based law firm Preti Flaherty is pleased to announce the addition of three lateral attorneys to the firm’s Corporate and M&A, Litigation, and Energy & Telecommunications Practice Groups: Chris McBrady began his career...

News

David Van Slyke Named to the 2025 Lawdragon 500 Leading Environmental Lawyers – The Green 500

Preti Flaherty’s David Van Slyke has been recognized by Lawdragon as one of the top 500 environmental lawyers in the U.S. This marks the fourth time he has been named to this prestigious list...

Publication

Mass. High Court Clarifies 6-Year Statute of Repose Does Not Bar Contractual Indemnification Claims

The Massachusetts Supreme Judicial Court just issued an important decision in  Trustees of Boston University v. Clough, Harbour & Associates LLP . In short: the Court held that the six-year statute of repose for...

Publication

Navigating New DEI Compliance and Enforcement Trends: What Employers Need to Know

A series of recent executive orders and federal agency actions have introduced significant changes to how workplace diversity, equity, and inclusion (DEI) programs are evaluated under federal law. While longstanding legal obligations prohibiting discrimination...

Publication

Understanding Alien Registration Requirements

What is Alien Registration? A 1940 law, known as the Alien Registration Act, requires that every foreign national, age 14 years or older who will be in the United States (U.S.) for 30 days...

Press Coverage

Unitil to purchase Maine Natural Gas for $86 million

New England-based electricity and natural gas company Unitil has entered an agreement to purchase Maine Natural Gas from Avangrid for $86 Million. Preti Flaherty attorneys Todd Griset, Anthony Buxton, and Bonnie Martinolich represent Avangrid...

Publication

Maine’s Proposed Climate Superfund Legislation: Borrowing a Page From CERCLA to Address Climate Costs

Two bills proposing to create a state-level climate cost recovery program are currently being considered by the Environment and Natural Resources Committee of the Maine Legislature. The first, introduced in late April 2025, is...

Press Coverage

No Closed Trial, Pseudonymity at Trial, or Audio-Only Testimony for Billion-Dollar Maine Lottery Winner

A federal court in Maine has issued a decision reaffirming the public’s right of access and emphasizing the vital role of the press in monitoring the courts. The decision denied a request by a...

Event

The Nuts & Bolts of Workplace Accommodations, Remote Work, and Performance Management Issues

The COVID-19 pandemic reshaped the work environment, making remote and hybrid work the new norm. While employees enjoy the benefits of not commuting, having a better work life-balance, and increased flexibility, these changes present...

News

Preti Flaherty Announces Promotion of Cameron Ferrante, Effective January 1, 2025

Preti Flaherty is pleased to announce the promotion of Cameron Ferrante. Cameron Ferrante has been promoted to Partner . A seasoned attorney in the firm’s Municipal Law and Finance Practice Group, Cam specializes in...

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