When he was an associate in the L.A. office of Pillsbury Winthrop Shaw Pittman, David Derrico says he got headhunter calls almost every day. One day, he got five before lunch.

“I was always polite, but some headhunters were really pushy,” he said. It could be overwhelming, he said, especially after his firm got bad press. “Then they were like sharks circling the waters.”