We Are Litigators Who Get Results

We are proud of the work we do. Our attorneys are zealous advocates committed to fighting for the justice our clients deserve. Skill and professionalism are just as important as the ability to connect on a personal level. Our dedicated staff have unparalleled commitment to our clients as well, and together with our attorneys, they work tirelessly to advance employee, consumer and privacy rights.

Michael Crosner

Michael has been a trial lawyer for over 50 years. He began his legal career as a prosecutor for the Los Angeles City Attorney’s office where he honed his trial advocacy skills. Within three years, Michael opened his own private litigation practice representing...

Zachary Crosner

Growing up in a family of trial lawyers, Zach has been crafting his litigation skills for many years. While attending law school at University of San Diego School of Law he was a member of the international moot court/mock trial team and an article writer for the USD...

Jamie Serb

Jamie has spent nearly her entire legal career focused on wage and hour class action & PAGA representative action litigation, and as a result is experienced well beyond her years. As a senior level attorney with a plaintiff-side wage and hour law firm, Jamie has...

Chad Saunders

Chad has more than 10 years' experience handling plaintiff-side employment class actions and individual cases, including wage and hour disputes and discrimination claims. His practice focuses on class and collective actions on behalf of workers who have been denied...

Kiara Bramasco

Kiara has spent her entire legal career focused on employment law, particularly wage and hour class action and PAGA litigation. Kiara clerked for a reputable wage and hour class action law firm all three years in law school. She then went on to become a full time...

Craig Straub

Craig is a senior associate with the firm. His practice focuses on all types of consumer protection and privacy class actions and has significant experience in false advertising/labeling. Craig was recently a primary participant in a New York false labeling class...

Branden Hamilton

Branden has spent her entire legal career focused in plaintiff-side employment law and workers compensation. Prior to working with Crosner Legal, she gained significant experience handling wrongful termination litigation for preeminent plaintiff firms in California....

Sepideh Ardestani

Sepideh is one of our senior attorneys at Crosner Legal. She has spent nearly her entire legal career prosecuting class action cases on behalf of individuals and employees. Prior to joining Crosner Legal, she spent approximately 9 years as an attorney for a prominent...

J. Kirk Donnelly

In 1995, Kirk graduated cum laude from the University of San  Diego School of Law where he was selected to the Order of the Coif and the Order of Barristers. Kirk received his B.A. in 1989 from the College of William and Mary. Kirk spent several years in the...

Gwendolyn “Nikki” Trenner

Nikki has spent nearly her entire legal career representing California workers in class and representative actions for unpaid wages and all forms of wage theft in all state and federal courts in the state of California. As a result, she has experience far beyond her...

Jonathan Stilz

For years, Jon worked as an employment defense and business lawyer representing companies of all sizes and specializing in the defense of a myriad of employment and labor disputes.  Jon has handled complex wage and hour representative actions, single plaintiff...

Andrew Goodman

Andrew directs and oversees the administrative functions and legal service operations for Crosner Legal, and guides the implementation of strategic plans and development of client service efficiencies. Andrew has broad-based expertise in operations, finance,...

Shishir Kumar Kathurwar

Sky's the limit when it comes to technology. Ex-startup entrepreneur and alumni of Harvard Business School and Ohio State, Shishir's role with Crosner Legal is to solve the numerous challenges related to the case acquisition, prosecution and resolution of class action...

Jessica Ball

Jessica joined Crosner Legal in 2021 as a legal assistant in our class action department.  Prior to joining Crosner, Jessica achieved experience as a legal assistance in a variety of areas of law where she assisted in matters related to employment, class action,...

Maria Monterrey

Maria has been with the firm since 2018. She is bilingual and assists our attorney with our Spanish-speaking clients.  She has an AA in communication and a paralegal certificate from Pasadena city college. 

Zachary Crosner

Partner/President of Firm

zach@crosnerlegal.com

Growing up in a family of trial lawyers, Zach has been crafting his litigation skills for many years. While attending law school at University of San Diego School of Law he was a member of the international moot court/mock trial team and an article writer for the USD Law Newspaper. He also found time to work at two top-rated plaintiff litigation firms in San Diego. At those litigation firms he actively participated in several multimillion dollar lawsuits

Michael Crosner

Of Counsel

mike@crosnerlegal.com

Michael has been a trial lawyer for over 45 years. He began his legal career as a prosecutor for the Los Angeles City Attorney’s office where he honed his trial advocacy skills. Within three years, Michael opened his own private litigation practice representing victims in criminal defense, personal injury and other areas of litigation. He is uniquely successful handling personal injury matters because of his experience gained as an award-winning insurance adjustor for a major auto insurance company.

Jamie Serb

Jamie Serb

Jamie has spent nearly her entire legal career focused on wage and hour class action & PAGA representative action litigation, and as a result is experienced well beyond her years. As a senior level attorney with a plaintiff-side wage and hour law firm, Jamie has...

read more
Chad Saunders

Chad Saunders

Chad has more than 10 years' experience handling plaintiff-side employment class actions and individual cases, including wage and hour disputes and discrimination claims. His practice focuses on class and collective actions on behalf of workers who have been denied...

read more
Kiara Bramasco

Kiara Bramasco

Kiara has spent her entire legal career focused on employment law, particularly wage and hour class action and PAGA litigation. Kiara clerked for a reputable wage and hour class action law firm all three years in law school. She then went on to become a full time...

read more
Craig Straub

Craig Straub

Craig is a senior associate with the firm. His practice focuses on all types of consumer protection and privacy class actions and has significant experience in false advertising/labeling. Craig was recently a primary participant in a New York false labeling class...

read more
Branden Hamilton

Branden Hamilton

Branden has spent her entire legal career focused in plaintiff-side employment law and workers compensation. Prior to working with Crosner Legal, she gained significant experience handling wrongful termination litigation for preeminent plaintiff firms in California....

read more
Sepideh Ardestani

Sepideh Ardestani

Sepideh is one of our senior attorneys at Crosner Legal. She has spent nearly her entire legal career prosecuting class action cases on behalf of individuals and employees. Prior to joining Crosner Legal, she spent approximately 9 years as an attorney for a prominent...

read more
J. Kirk Donnelly

J. Kirk Donnelly

In 1995, Kirk graduated cum laude from the University of San  Diego School of Law where he was selected to the Order of the Coif and the Order of Barristers. Kirk received his B.A. in 1989 from the College of William and Mary. Kirk spent several years in the...

read more
Gwendolyn “Nikki” Trenner

Gwendolyn “Nikki” Trenner

Nikki has spent nearly her entire legal career representing California workers in class and representative actions for unpaid wages and all forms of wage theft in all state and federal courts in the state of California. As a result, she has experience far beyond her...

read more
Jonathan Stilz

Jonathan Stilz

For years, Jon worked as an employment defense and business lawyer representing companies of all sizes and specializing in the defense of a myriad of employment and labor disputes.  Jon has handled complex wage and hour representative actions, single plaintiff...

read more
Andrew Goodman

Andrew Goodman

Andrew directs and oversees the administrative functions and legal service operations for Crosner Legal, and guides the implementation of strategic plans and development of client service efficiencies. Andrew has broad-based expertise in operations, finance,...

read more
Shishir Kumar Kathurwar

Shishir Kumar Kathurwar

Sky's the limit when it comes to technology. Ex-startup entrepreneur and alumni of Harvard Business School and Ohio State, Shishir's role with Crosner Legal is to solve the numerous challenges related to the case acquisition, prosecution and resolution of class action...

read more
Craig Straub

Jessica Ball

Jessica joined Crosner Legal in 2021 as a legal assistant in our class action department.  Prior to joining Crosner, Jessica achieved experience as a legal assistance in a variety of areas of law where she assisted in matters related to employment, class action,...

read more
Craig Straub

Maria Monterrey

Maria has been with the firm since 2018. She is bilingual and assists our attorney with our Spanish-speaking clients.  She has an AA in communication and a paralegal certificate from Pasadena city college. 

read more