The firm employs approximately 740 lawyers and has offices in California, Washington, D.C., New York City, Beijing, Brussels, Hong Kong, London, Seoul, Shanghai, Singapore, and Tokyo.

[2] The original one-paragraph written partnership agreement provided that "proceeds and expenses of said business" were to be split with three-fifths to Graves and two-fifths to O'Melveny, "until some other rate of division is agreed upon".

[2] The firm gained traction through its work on land litigation surrounding the ownership of California's Spanish haciendas and its handling of the legalities of hydroelectric power, which helped to transform the arid basin of Los Angeles into a car-centric metropolis.

In 1977, O'Melveny hired William T. Coleman, Jr., who had helped the country move toward desegregation 23 years prior as a lead strategist for the plaintiffs in the landmark Brown v. Board of Education.

The letter said "We look to you to ensure your students who hope to join our firms after graduation are prepared to be an active part of workplace communities that have zero tolerance policies for any form of discrimination or harassment, much less the kind that has been taking place on some law school campuses.

It received the highest rankings for "Job Satisfaction", "Associate/Partner Relations", "Best Firm Culture", "Quality of work", "Transparency", "Hours Requirements", "Summer Associate Program", and "Attorney Development.