For Larry Richard, founder and principal consultant of LawyerBrain, millennial attorneys can be an expensive resource for many law firms. While it takes an average of around three-and-a-half years for an associate to earn enough revenue for a firm to pay for his or her own employment, most millennial attorneys tend to leave firms just after two years, he said.

So how do firms retain millennials for longer? While there can be many different solutions to this challenge, most go back to a few core demands: changing the firm’s culture and providing an engaging and flexible work life.