Littler Strengthens Labor Practice with the Addition of Veteran Labor Relations Attorney Dan Mueller

SEATTLE (August 25, 2025) – Littler, the world’s largest labor and employment law practice representing management, today announced the addition of veteran labor attorney Dan Mueller as a shareholder in its Seattle office. Mueller, who joins the firm’s Labor Practice Group, most recently served as corporate labor counsel at an international retailer and previously worked at the National Labor Relations Board as a field attorney. 

“Dan has spent his career guiding employers through their most complex labor relations challenges,” said Erin Webber, Littler’s managing director and president. “His time with the NLRB and acumen in the labor law arena perfectly complements the capabilities of our labor relations team and exemplifies Littler’s strategic vision of being a destination for top talent in labor and employment law.” 

Mueller brings more than 25 years of experience representing employers in complex labor matters, such as high-stakes collective bargaining, unfair labor practice litigation, labor arbitration, and union organizing matters. He has worked with companies across the retail, hospitality, and healthcare industries, particularly in the Pacific Northwest—capabilities that will further deepen Littler’s ability to service both union and non-union employers in the region and beyond. 

During his tenure at the NLRB, he investigated unfair labor practice charges, litigated before Administrative Law Judges, and represented the agency in Section 10(j) injunction proceedings. 

“As legal, political, and social dynamics continue to reshape modern labor relations, employers need true-blue practitioners with deep knowledge of labor law to guide them through these complexities,” said Jonathan Levine, who co-chairs Littler’s Labor Practice Group alongside Tanja Thompson and Brooke Niedecken. “Dan’s decades of hands-on experience and ability to anticipate and respond to urgent labor relations matters will be of significant value to our clients as they navigate today’s uncertain environment.”

Mueller has served as lead counsel in dozens of labor arbitrations, ranging from single-employee discipline and discharge cases to seven-figure contract interpretation disputes. He has also drafted and filed hundreds of legal submissions, including briefs to the NLRB, injunction filings in federal district courts, and participated in drafting appellate briefs to multiple Circuit Courts of Appeals. 

“Dan’s addition further strengthens our footprint in the Pacific Northwest—we’re thrilled to welcome him in Seattle,” said Ryan Hammond, office managing shareholder of Littler’s Seattle office. “His practice bolsters our ability to serve a wide swath of employers not only in the region but across the country.”

Mueller joins Littler’s preeminent Labor practice, which is comprised of more than 250 labor attorneys that provide employers with forward-thinking, holistic labor relations counsel to effectively engage employees, achieve business goals, and manage risk. In the last two years alone, the team has bargained with every major union in the United States, advised almost 50% of the Fortune 100 on labor issues, and handled approximately 700 NLRB election petitions and over 2,000 unfair labor practice charges. 

“I’ve had the privilege of working closely with Littler’s exceptional labor team and have seen firsthand their leadership and talent,” said Mueller. “Littler provides an ideal platform for my practice during this pivotal moment as companies adapt to evolving labor laws and workplace dynamics.”

About Littler 

With more than 1,800 labor and employment attorneys in offices around the world, Littler provides workplace solutions that are local, everywhere. Our diverse global team and proprietary technology foster a culture that celebrates original thinking, delivering groundbreaking innovation that prepares employers for what’s happening today, and what’s likely to happen tomorrow.