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About me

I have practiced Michigan No-Fault Law for 30 years. After representing insurance companies for the first five, I decided people need more help than corporations and transitioned to represent individuals who are hurt by a negligent driver and/or find themselves fighting against their own insurance company for the much needed benefits to help them get well and pay their bills while they are recovering.


I have been recognized by my peers as one of Michigan's "Super lawyers" in my area of specialty as well as listed as one of Michigan's "Top Attorneys" in the New York Times.


I am licenced in both Michigan and Ohio and maintain memberships to The American Bar Association; Michigan Bar Association and Grand Rapids Bar Association. I have argued before the Michigan Supreme Court, United States Sixth Circuit Court and am an active member in both the United States Eastern and Western District Courts.


I have been a frequent guest speaker to multiple health provider organizations affiliated with catastrophically injured people as well as a speaker/contributer to The No-Fault institute of Michigan.


My sub-specialty involves the complex claims process relative to obtaining modified homes/vehicles for catastrophically injured adults and children as well as insuring the attendant care/replacement service benefits are paid to these vulnerable individules and their families. 


Practice areas


  1. Personal Injury: 100%
    31 years, 300 cases


Payment types:

Cash, Check, Credit card

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Contact info

220 Lyon St Nw Ste 560
Grand Rapids, MI, 49503


MIActive And In Good Standing198505/14/2016
OHNot Registered198905/15/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Super LawyerSuper Lawyers Magazine2015
Top Attorneys in MichiganHour Detroit Magazine2015
Super LawyerSuper Lawyers Magazine2014
Super LawyerSuper Lawyers Magazine2013
Top LawyerNew York Times Magazine2013
Super LawyerSuper Lawyers Magazine2012
Top lawyerNew York Times Magazine2012
Super LawyerSuper Lawyers Magazine2011
Top LawyerNew York Times Magazine2011
Work experience
TitleCompany nameDuration
AttorneyLaw Offices of William W. Decker, LLC1995 - Present
AttorneyBuchanan & Bos1990 - 1995
AttorneyOgne, Alberts & Stuart, PC1985 - 1990
Association namePosition nameDuration
Michigan Association for JusticeMember1996 - Present
Michigan Bar AssociationMembern1985 - Present
State Bar of MichiganMember1985 - Present
Federal Bar AssociationMember1985 - Present
Legal cases
Case nameOutcome
Wilcox v State FarmHundreds of thousands of dollars paid for comprehensive first party benefits.
See all legal cases 
Publication nameTitleDate
Advocasy 360How To Use the Negative MRI2013
National Business Institute SeminarTrying The Automobile Injury Case In Michigan2002
School nameMajorDegreeGraduated
Michigan State UniversityLawJD - Juris Doctor1985
Hillsdale CollegeBusiness Administration/ Pre-LawBS - Bachelor of Arts1980
Speaking engagements
Conference nameTitleDate
Advocacy 360 Las Vegas SeminarUsing the Negative MRI to prove injuries in the Difficult Automobile Accident Case2013
No-Fault Institute of Michigan SeminarSubmitting First party Claims2011
Hope Network Medical ConferenceHome Modification Claims2011
No-Fault Institute SeminarDirect Examination of the Brain Injured Plaintiff2009