Photograph of Katie Erno

Katie Erno


Katie Erno is a counsel in Crowell & Moring’s Labor & Employment Group. Katie represents companies in a wide range of complex commercial disputes, with a focus on employment litigation and counseling. 

Specifically, Katie litigates a variety of wage and hour claims, class actions, discrimination and harassment claims, shareholder disputes, and issues related to corporate governance. She has deep experience in all stages of litigation, from drafting and challenging complaints, fact and expert discovery, drafting and arguing discovery and dispositive motions, trial, and appeals. Her cases range from single-plaintiff disputes to class actions and complex litigation involving large liability exposure in the context of high-profile bankruptcies. Katie enjoys learning the intricacies of her clients’ businesses and tailors her litigation approach with her clients’ ultimate business objectives in mind.

On the counseling side, Katie routinely investigates and advises clients on a variety of pre-litigation employment-related issues, including wage and hour and discrimination and harassment complaints, employee discipline and termination, employment policies and practices, employee mobility, and non-competition issues. Katie works with employers to build compliant and defensible practices in the first instance so that they can avoid litigation whenever possible.

Katie graduated cum laude from New York University School of Law in 2009. She graduated cum laude from Boston College in 2004, earning her B.A. in Hispanic Studies and Communications.

Representative Matters

  • Ramirez v. Guzman Brothers, Inc. (Cal. Sup. Ct. 2015) – Successfully defeated class certification on behalf of Guzman Brothers, Inc., owner/operator of a Mexican restaurant, against wage and hour claims brought by former employee Miguel Ramirez and “others similarly situated.”
  • Successfully defended one of the largest providers of on-site auto-repair services in the San Francisco Bay Area against discrimination and related claims brought by former employee. 
  • Bettina Whyte, as Trustee for the SemGroup Litigation Trust v. PricewaterhouseCoopers LLP (Okla. Dist. Ct.)—Represented the Trustee of the SemGroup Litigation Trust in a suit brought against PricewaterhouseCoopers, LLP related to PricewaterhouseCoopers' breach of its professional and fiduciary duties that resulted in the multi-billion dollar collapse of SemGroup, a midstream oil company in Oklahoma. Plaintiff successfully remanded the case back to state court, survived a motion to dismiss, and defeated several key summary judgment motions. The case settled shortly before trial.
  • Dr. Bondi, Extraordinary Commissioner of Parmalat S.p.A. v. Grant Thornton LLP (2d Cir.)—Represented Extraordinary Commissioner of Parmalat S.p.A., the Italian dairy and food products conglomerate, in a lawsuit against various Grant Thornton entities arising out of one of the largest bankruptcies in European history. Plaintiff successfully challenged federal jurisdiction in the Second Circuit Court of Appeals, which resulted in an order vacating an adverse summary judgment decision.


  • Boston College, B.A. Hispanic studies and communications (2004) cum laude
  • New York University School of Law, J.D. (2009) cum laude


Admitted to practice: California, District of Columbia

View More

"New York State Governor Signs Legislation to Address Workplace Harassment, Discrimination, and Retaliation," Labor & Employment Law Alert - US (March 22, 2022). Contacts: Eric Su, Katie Erno, Ira M. Saxe, Trina Fairley Barlow, Rebecca L. Springer
Client Alert / Newsletter
How To Manage Changing COVID-19 Workplace Safety Obligations SHRM Online (March 1, 2022)
Press Coverage
"Georgia District Court Addresses Scope of Nationwide Injunction of Federal Contractor Vaccine Mandate," Government Contracts Bullet Points (January 28, 2022). Contacts: Peter Eyre, Thomas P. Gies, Katie Erno, John Nakoneczny, Rina M. Gashaw
Client Alert / Newsletter
"OSHA Withdraws Its COVID-19 Vaccination and Testing ETS Effective January 26, 2022," Government Contracts Bullet Points (January 25, 2022). Contacts: Daniel W. Wolff, Thomas P. Gies, Peter Eyre, Katie Erno, Rina M. Gashaw, Tyler Brown
Client Alert / Newsletter
"A Georgia District Court Enjoins the Government from Enforcing the Federal Contractor Vaccine Mandate Nationwide," Government Contracts Bullet Points (December 7, 2021). Contacts: Kris D. Meade, Thomas P. Gies, Katie Erno, Peter Eyre, Lorraine M. Campos, Cherie J. Owen, Alexandra Barbee-Garrett, Rina M. Gashaw
Client Alert / Newsletter
"Exploring OSHA’s Vaccine and Testing Requirements for Employers With 100 or More Employees," Crowell &Moring Webinar (November 10, 2021). Speakers: Thomas P. Gies, Daniel W. Wolff, Katie Erno, and Tyler Brown.
"OSHA Publishes Vaccine Requirements for Employers with 100 or More Employees," (November 4, 2021). Contacts: Thomas P. Gies, Daniel W. Wolff, Katie Erno, Tyler Brown
Client Alert / Newsletter
"Federal Contractors Now Have Until January 4 for Their Covered Workforce to be Vaccinated," Government Contracts Bullet Points (November 4, 2021). Contacts: Peter Eyre, Nicole Owren-Wiest, Laura J. Mitchell Baker, Alexandra Barbee-Garrett, Rina M. Gashaw, Thomas P. Gies, Katie Erno, Kris D. Meade
Client Alert / Newsletter
"Task Force Issues New FAQs for Contractor Vaccine Requirements," (November 1, 2021). Contacts: Peter Eyre, Thomas P. Gies, Kris D. Meade, Michelle D. Coleman, Katie Erno, Rina M. Gashaw, Amanda H. McDowell
Client Alert / Newsletter
"Employees in New York State May Now Petition Their Employers to Participate in a Shared Work Program as an Alternative to Layoffs," Labor & Employment Law Alert - US (November 1, 2021). Contacts: Thomas P. Gies, Eric Su, Ira M. Saxe, Katie Erno, Rachel Lesser
Client Alert / Newsletter

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Crowell & Moring LLP is an international law firm with offices in the United States, Europe, MENA, and Asia that represents clients in litigation and arbitration, regulatory and policy, and transactional and corporate matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation and government-facing matters, as well as its ongoing commitment to pro bono service and diversity, equity, and inclusion.

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