Halling & Cayo, S.C.

James F. Guckenberg

Phone: (414) 271-3400
Fax: (414) 271-3841
E-mail: [email protected]

Practice Areas:

Jim has a diverse practice that encompasses civil litigation, mediation, and estate planning.   His litigation clients include individuals with workplace and personal injuries, insurance companies, and consumers affected by unfair debt collection practices.  As a mediator, Jim has resolved disputes involving rental security deposits, consumer debts, professional services, construction projects, and divorce.  Jim has a background in family law and is trained in divorce and family mediation.

Jim was born in Madison, Wisconsin and has lived and worked throughout Wisconsin both in small towns and large metropolitan areas.  He has a bachelor’s degree in music education and performance, and he spent eight years teaching instrumental and general music in the public schools in Anoka, Minnesota before going to law school.  He continues to actively perform and teach music.  Jim lives in Wauwatosa’s East Town neighborhood where he is a member of Wauwatosa Presbyterian Church.


  • Hamline University School of Law, Juris Doctor
  • Lawrence University, Bachelor of Music


  • Mediation and Restorative Justice Center.
  • Legal Action of Wisconsin
  • Milwaukee Justice Center


  • 2016 Client Satisfaction Award, American Institute of Family Lawyers
  • 2015 Client Satisfaction Award, American Institute of Family Lawyers


  • Job Protections for Injured Workers, Halling & Cayo, S.C. Blog, August 2016, https://hallingcayo.com/latest-news/
  • Same sex marriage a reality . . . now what?, Wisconsin Law Journal, October 14, 2014
  • Renewing the Limitations Period for Collecting Judgments, Kohn Law Firm Legal Notes Blog, August 2011, out of publication.
  • An Overview of Earnings Garnishment, Kohn Law Firm Legal Notes Blog, August 2010, out of publication.


  • Family and Matrimonial Law in the 21st Century: Practicing with Humanity,September 17, 2013, Law Review Continuing Legal Education
  • Same Sex Marriage and Divorce in Wisconsin, September 23, 2013, Milwaukee Bar Association


  • Wisconsin Association of Mediators
  • State Bar of Wisconsin
  • Milwaukee Bar Association
  • Leander J. Foley, Jr. Matrimonial Chapter of the American Inns of Court
  • Society of Family Lawyers