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  • The Sacramento County Deputy Sheriffs' Association has utilized the services of Mastagni Holstedt, A Professional Corporation for over 30 years. During my tenure as Association President there has not been one situation that the firm could not handle... Read more >

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Mastagni Holstedt, A Professional Corporation
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Northern California Location
1912 I Street
Sacramento, CA 95811
916-446-4692 Phone
916-447-4614 Fax
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Southern California Location
3400 Inland Empire Blvd, #101
Ontario, CA 91764
877-212-6907 Phone
Other Locations in Whittier, Chico, Stockton and San Jose

Shawn B. Collins


(916) 491-4225 | Cell: (916) 215-9637 | | VCard

Shawn B. Collins is a Senior Associate with the Labor Department of Mastagni Holstedt, A.P.C. Shawn's practice focuses on the Public Safety Officers Procedural Bill of Rights Act, the Firefighters Procedural Bill of Rights Act, and criminal defense. Shawn defends public sector employees in administrative investigations, critical incident investigations, and criminal investigations. Shawn also petitions for redress of public sector employee grievances.

Prior to joining the firm Shawn was a career criminal defense attorney, both as a public defender and a private attorney. He has copious litigation experience at the trial court level, and has also been successful in appellate courts.


  • J.D. Wayne State University, Detroit MI (2008)
  • M.A. Arizona State University, Tempe AZ (2000)
  • B.A. Michigan State University, E. Lansing MI (1995)

Bar Admissions

  • California State Bar (2008)
  • Federal Court of Appeals, Ninth Circuit (2008)