EPSTEIN BECKER & GREEN

Kathryn McMahon, 51, has joined Epstein Becker & Green’s Washing­ton office as a member of the firm’s labor and employment practice. She focuses on occupational safety and health law, in addition to environmental law. She joins the firm from Kelley Drye & Warren. McMahon earned her J.D. from Cornell Law School.

MORRISON & FOERSTER

Scott Lesmes, 46, has joined Morrison & Foerster’s Washington office as partner in the firm’s corporate-finance practice. Lesmes, who focuses on corporate and securities matters, joins Morrison & Foerster from O’Melveny & Myers. He earned his J.D. from Elon University School of Law.

SIDLEY AUSTIN

Raymond Atkins, 44, has joined Sidley Austin’s Washington office as partner in the firm’s transportation practice. Previously, Atkins served as general counsel of the Surface Transportation Board. He earned his J.D. from George Mason University School of Law.