About Mark A. Stone

Mark Stone is a Toronto partner at Filion Wakely Thorup Angeletti who works for employers, private and public sector alike, on whatever labour or employment question comes up. Plenty of that is forward-looking, strategic counsel given before trouble starts. It also takes Stone to the bargaining table, into contested hearings and through labour disputes such as strikes and picketing.

Called to the Ontario bar in 1991, Mark Stone joined the partnership in 1997 and brings a mix of law and business training: a law degree from Dalhousie, plus arts and business administration degrees from St. Francis Xavier.

Stone has been recognized in The Best Lawyers in Canada since 2022, for labour and employment law in Toronto. Stone also shares what the job teaches: in November 2025, Stone was one of the presenters on a webinar run by AEC, a national team of local lawyers, that walked construction employers with operations in several provinces through how certification, decertification and raid rules vary from one jurisdiction to the next.

Practice areas

Strikes and picketing

When a strike or picket line hits, Mark Stone helps employers respond, whether that means going to court for an injunction against unlawful picketing or taking cease and desist matters to the Ontario Labour Relations Board.

Collective bargaining

Stone has plenty of experience negotiating for management and has led the employer's side at the table as spokesperson, both for first contracts and for renewals. Employers also turn to Stone regularly for advice on how to word their collective agreements.

Hearings and litigation

Stone acts for employers before labour boards, arbitration boards, courts and other employment tribunals. That work has included many significant collective agreement arbitrations and wrongful dismissal matters as lead counsel, as well as proceedings at the Ontario Labour Relations Board and the Human Rights Tribunal of Ontario.

Education & credentials

  • Bachelor of Laws, Dalhousie University
  • Bachelor of Arts and Bachelor of Business Administration, St. Francis Xavier University
  • Called to the Bar of Ontario (1991)

Memberships & affiliations

  • Ontario Bar Association: Mark Stone belongs to the OBA's Labour Relations and Administrative Law sections.
  • The Advocates' Society: Mark Stone is a member of The Advocates' Society.
  • Toronto Lawyers Association: Mark Stone is a member of the Toronto Lawyers Association.
  • Canadian Association of Counsel to Employers (CACE): Mark Stone is a member of the Canadian Association of Counsel to Employers.

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This listing was generated by AI from public sources in October 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm Mark A. Stone’s licence and standing in the Law Society of Ontario directory ↗

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