Lateral hires are risky. Even managing partners responding to the Hildebrandt/Citi 2015 Client Advisory’s confidential survey admitted that only about half of their lateral partners are break-even at best—and the respondents had unrestrained discretion to decide what qualified as “break-even.” As Ed Newberry, co-global managing partner of Squire Patton Boggs, told Forbes, “Lateral acquisitions, which many firms are aggressively pursuing now … is a very dangerous strategy because laterals are extremely expensive and have a very low success rate.”

Beyond the financial perils, wise firm leaders understand that some lateral partners can have an even greater destructive impact on a firm’s culture. In late 2014, former American Lawyer editor-in-chief Aric Press interviewed Latham’s outgoing chairman Bob Dell, who was retiring after a remarkably successful 20-year run at the top of his firm. Dell explained that he walked away from prospective lateral partners who were not a good cultural fit because they stumbled over Latham’s way of doing things.