
Jonathan R. Sigel (Photo/Courtesy)
WESTBOROUGH – Two lawyers from Westborough were selected by their peers for inclusion in “The Best Lawyers in America (2025 edition).”
Jonathan R. Sigel was recently selected in the fields of litigation – labor and employment and employment law – management. Sigel has been recognized since 2013.
He is a partner in the labor, employment and employee benefits group at Mirick O’Connell. He advises clients on a broad range of employment issues, including employment and severance agreements, handbooks and policies, and terminations and layoffs.
Sigel also advises management on proper wage and hour classification.
Brian Casaceli was selected for his work in employee benefits (ERISA) law, labor and employee law – management, and litigation – labor and employment. This is his second year listed.

Brian Casaceli (Photo/Courtesy)
Casaceli is a partner in Mirick O’Connell’s labor, employment and employee benefits group.
Casaceli focuses his practice on representing employers in federal and state courts in Massachusetts, as well as before the Massachusetts Commission Against Discrimination and the Equal Employment Opportunity Commission in defense of claims of discrimination, sexual harassment, wrongful termination, breach of contract and wage payment violations.
Since it was first published in 1983, Best Lawyers has become universally regarded as the definitive guide to legal excellence. For the 2025 edition, more than 23 million votes were analyzed, which resulted in more than 80,000 lawyers included in the 31st edition.