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Our Lawyers. Our Success.

Sheryl L. Johnson, B.A. (Hons.), LL.B.


Phone: 905-688-0562


Areas of Law

Administrative Law, Civil Litigation and Advocacy, Employment and Labour Law


Sheryl joined Sullivan Mahoney LLP in 2019 and is a member of our Employment Group.

Full Bio

In her employment practice Sheryl provides timely strategic advice and perspective on all aspects of the employment relationship provincially and federally, including recommending and assisting in implementing effective measures to expediently manage and proactively address all types of workplace issues, negotiations and disputes. This includes for example: negotiating executive compensation packages and employment contracts; drafting and interpreting restrictive covenants such as confidentiality, nondisclosure and intellectual property agreements; providing advice on and negotiating severance packages and wrongful dismissal actions; drafting human resources handbooks, policies and best practices and providing training and seminars on the same; advising clients on all employment and privacy statutory matters (i.e., human rights, occupational health and safety, workers compensation, pay equity, workplace and medical privacy, cannabis and employment standards entitlements and obligations); advising on governance matters and jurisdictional issues; and conducting or overseeing workplace assessments and investigations.

In her labour practice Sheryl advises management in all facets of labour relations in the provincial and federal jurisdictions. This includes such matters as union certification drives and employer free speech campaigns, unfair labour practice applications, related and successor employer applications, collective bargaining, conciliation and representation before the Ontario Labour Relations Board, the Canada Industrial Relations, grievance arbitrators and grievance arbitration boards.

Sheryl is the author of Sexual Harassment in Canada: A Guide for Understanding and Prevention and has appeared before the HUMA Committee as an expert witness on the issue of workplace violence.

Sheryl was born and raised in Niagara-on-the-Lake.  Prior to joining Sullivan Mahoney Sheryl practiced Employment and Labour, Privacy, Cannabis, Aboriginal and Indigenous, Administrative and Civil Litigation Law in Toronto at recognized and well-respected Labour and Employment law boutique firms and a mid-size full-service firm.


York University – Osgoode Hall Law School, LLB  1994-1997
McMaster University – Honours B.A., Labour Studies, 1990 – 1994