Mark A.Lies


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Mark works with his clients to build strong worker safety policies, identify hazards, ensure compliance, and protect their operations and reputation.

More About Mark

Clients seek guidance on protecting their employees against every safety or health hazard in the workplace. They need help developing written policies to describe such hazards, training employees, and enforcing compliance with discipline for violations. Mark is the trusted advisor who can help them keep their employees safe.

Mark has been practicing occupational safety and health law with Seyfarth since 1974. He has represented clients across the country, as well as in US territories. His practice involves virtually every industry and has handled responses to a variety of workplace incidents, including catastrophic fires, explosions, and accidents.

Mark has represented clients in federal and state courts, on matters which have been landmark OSHA cases involving definitions of willful citations, search warrants, confined spaces, firefighting, heat illness, and others. He has also been invited to be a member of the industry associations that actually write industry safety standards, including the American National Standards Industry (ANSI) and the National Fire Protection Association (NFPA).

Mark believes flexibility and communication are key when developing healthy client relationships. He knows it is a service-oriented relationship, and with that in mind, takes the time to seek out a "report card" on his clients' satisfaction with the firm's services. If there are any problems, he promptly addresses them.

In Mark's 45 years at Seyfarth, the firm has gone from 43 attorneys and two offices to approximately 900 attorneys and an international firm. He enjoys the collegial relationships he experiences with partners and associates.

  • JD, DePaul University College of Law

    DePaul University Law Journal case and comment editor

  • BA, University of Notre Dame
  • Illinois
  • US Supreme Court
  • US Court of Appeals, Third Circuit
  • US Court of Appeals, Fourth Circuit
  • US Court of Appeals, Seventh Circuit
  • US Court of Appeals, Eleventh Circuit
  • US Court of Claims
  • US District Court, Northern District of Illinois