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Dan O'Neil, Employment Attorney in Boston, Massachusetts

Over 15 years of legal practice · focused on Employment and M&A

Boston, MA

Practicing employment in Boston since 2011.

15+
Years practicing
1
Bar admission

Practices in

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Quick answer

Dan O'Neil is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Employment and M&A. Dan has over 15 years of legal experience.

Based in
Boston, MASSACHUSETTS
Experience
over 15 years
Known for
Employment · M&A
  • Handles Employment and M&A matters from Boston, MASSACHUSETTS.
  • Over 15 years of practice as a licensed attorney.
  • Recognized with Best Lawyers in America — Employee Benefits (ERISA) Law (2026).

About Dan O'Neil: Dan O'Neil is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Employment and M&A. Dan has over 15 years of legal experience.

Areas of practice

Legal matters Dan takes on

Dan concentrates on employment and m&a. Each area below outlines the kind of case Dan handles, typical outcomes to expect, and how the intake process starts.

Employment cases in Boston, Massachusetts

Dan takes employment matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dan agrees to represent you.

M&A cases in Boston, Massachusetts

Dan takes m&a matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dan agrees to represent you.

Biography

Meet Dan O'Neil — employment lawyer in Boston

Dan O'Neil is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Employment and M&A. Dan has over 15 years of legal experience.

Dan O’Neil focuses his practice on employee benefits and executive compensation matters with an emphasis on corporate transactions. Dan has experience with employee benefit and executive compensation due diligence, negotiation of the related provisions in transaction agreements and assists clients with issues relating to sections 280G, 162(m) and 409A of the Code. Dan is also experienced in a wide range of tax and benefits issues, including day-to-day retirement plan compliance, ERISA fiduciary matters, prohibited transactions and plan design. His writing has been featured in Benefits Quarterly.

Read full biography: https://www.mwe.com/people/dan-oneil/

How Dan handles employment matters

Dan O’Neil focuses his practice on employee benefits and executive compensation matters with an emphasis on corporate transactions. Dan has experience with employee benefit and executive compensation due diligence, negotiation of the related provisions in transaction agreements and assists clients with issues relating to sections 280G, 162(m) and 409A of the Code. Dan is also experienced in a…

Who Dan represents

Dan reviews new inquiries case-by-case for employment and m&a matters in Boston and the surrounding Massachusetts area.

Jurisdictions

Dan's state bar admissions

  • Massachusetts, Massa

    2011 · ACTIVE

Recognition

Recognition and thought leadership

Dan has received 4 formal recognitions from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Employee Benefits (ERISA) Law

    2026

  • Best Lawyers in America — Mergers and Acquisitions Law

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Corporate Governance and Compliance Law

    2026

Legal awards and honors

Best Lawyers in America — Employee Benefits (ERISA) Law (2026). Best Lawyers in America — Mergers and Acquisitions Law (2026). Best Lawyers in America — Additional Areas of Practice: (2026). Best Lawyers in America — Corporate Governance and Compliance Law (2026).

Locations

Dan O'Neil's office in Boston

Dan's primary office is at 200 Clarendon Street, 49th Floor, Boston, Massachusetts, 02116. In-person meetings are by appointment; a phone intake usually comes first.

Main office

200 Clarendon Street, 49th Floor

Boston, Massachusetts 02116

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Client feedback

Client reviews of Dan O'Neil

Dan has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Dan O'Neil — what to expect in your first consultation

Working with a new employment attorney should feel structured. Here's how the first two conversations with Dan usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Dan charges for the initial consult. That fee is credited toward representation if you retain Dan's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Dan will tell you what matters and what doesn't.

Questions to ask a employment attorney in Boston, Massachusetts

A short list to run through before you commit: How many employment matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Dan

Dan discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in employment practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every employment matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Dan confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Dan's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many employment practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Dan O'Neil

  • How much does it cost to hire Dan for a employment case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Dan walks through the likely range during the consult so there are no surprises.

  • Does Dan offer a free consultation?

    Dan charges for the initial consult; that fee is credited toward representation if you retain Dan's office. Some employment attorneys offer free consults — check Dan's current terms during booking.

  • How long do employment cases in Massachusetts typically take?

    Simple employment matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Dan gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Dan take my case if I'm outside Boston?

    Dan is licensed in Massachusetts. Matters governed by Massachusetts law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Dan will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Dan?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Dan will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Dan accepting new employment clients right now?

    Dan's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Employment attorneys serving Boston, Cambridge and Worcester in Massachusetts

Dan handles employment matters throughout Massachusetts. Each city below is a direct link into the search page for verified employment attorneys in that community.

More counsel

If Dan's intake is full or the fit isn't right, these employment attorneys in Boston handle similar matters. Every profile below is verified and open to consultations.