Employment plaintiffs firm Sanford Heisler Sharp doesn’t just sue big law firms and give their leaders heartburn. Sometimes, it hires from them.

This week Sanford Heisler announced that it had added Paul Blankenstein as a partner from Gibson, Dunn & Crutcher, where he represented defendants in Employee Retirement Income Security Act litigation and other matters. Blankenstein, who was of counsel at Gibson Dunn, will co-chair his new firm’s financial services litigation practice.