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Mark L. Aronowitz, Partner – The Spence Law Firm, LLC

Mark L. Aronowitz Partner

Mark L. Aronowitz, Partner – The Spence Law Firm, LLC

Mark Aronowitz is a partner who manages our new cases department along with our managing partner Daniel Fleck.  The Spence Law Firm has also dedicated Mark as the Executive Director of LAW, and Mark has served in that role for the last fourteen years.  As both a partner and the ED of LAW, Mark provides direct representation to individual clients in a wide variety of practice areas including wrongful death, personal injury, motor vehicle accidents, employment disputes, and Workers’ Compensation.  In 2019 Mark successfully represented the families of two undocumented workers who died in a trench collapse in Teton County, Wyoming.

On a statewide scale, Mark monitors legislation and, working closely with his Board of Directors and the Wyoming Trial Lawyers Association (where he serves as the Legislative Committee co-chair) identifies bills that bear potential to affect the rights of individuals in Wyoming.  Mark will strategize and coordinate in order to defeat legislation detrimental to Wyomingites and the civil justice system or, conversely, to propose, support and help enact legislation to improve workplace safety, workers’ and victims’ rights within the civil justice system. Mark also represents individual clients, or the families of deceased workers, either pro bono or with fee earning work, and any income obtained through cases and settlements is directed back to fund and support LAW.

Originally from New York, Mark attended Miami University in Oxford, Ohio majoring in English with a Minor in History. After graduation, Mark was offered a teaching position with the Teton Science School in Wyoming where he taught courses on environmental education in Yellowstone and Grand Teton National Parks. In 2005, Mark graduated with a law degree from Lewis & Clark Law School in Portland, Oregon before returning to Wyoming.

Mark is proud to have had the opportunity through both The Spence Law Firm and L.A.W. to serve numerous Wyoming residents in need. He has been a fierce advocate for injured workers and their families, and stands on the side of all those who have had their rights violated by large companies, insurance giants, and the government.

Mark was instrumental in the development of the Spence Association For Employee Rights (SAFER) during his time as L.A.W. Executive Director. As a nonprofit public interest arm of L.A.W., SAFER aims to increase workplace safety and reduce the number of on-the-job injuries and deaths throughout the state of Wyoming. Mark also played a key role in passing 2008 and 2009 legislation that sought to improve workers’ compensation benefits for injured employees and their family members and, in 2009 and 2010, he helped secure the funding and preliminary legislation for Equal Justice Wyoming alongside the Wyoming Access to Justice Commission. Afterward, Mark served for six years on the Board of Commissioners for Equal Justice Wyoming.

Mark has also previously served for nine years as a Board Member for the Grand Teton Association and is currently on the Board of the Teton Raptor Center.  Mark lives south of Jackson with his wife, daughter (11) and son (8).


Photo of Mark L. Aronowitz

“I often think about how difficult it must be to pick up the phone, call a complete stranger, and ask for help. I am thankful when people summon the courage to make that call because the law, when applied or practiced properly, is a tremendous equalizer that can change lives not only for our clients but for our society as a whole.”


  • Wyoming State Bar
  • Oregon State Bar
  • Wyoming Trial Lawyers Association
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If you are struggling with a serious injury, or are fighting against seemingly impossible odds against big corporations, insurance companies or the government, call us to speak with our team of trial lawyers who will fight for you. We take no fee unless we earn it by winning your case.