Holcomb is a professor of business ethics and legal studies at the Daniels College of Business of the University of Denver.

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Andrea Matwyshyn, a Wharton professor of legal studies and business ethics and an Uber fan.

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Agents, even if working for the seller, do have some ethical duties to buyers, adds Alan Strudler, professor of legal studies and business ethics at Wharton.

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Potentially controversial, it is also a tricky legal area in the United States, according to Deborah Weinstein, who teaches employment law for managers in Wharton's legal studies and business ethics department.

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