Eric Cooperstein, a lawyer with the Minnesota Board of Professional Responsibility has his own firm that focuses on ethics issues. “Leaving a law firm” is one of his practice areas.
There are ethical and practical considerations implicated in many professional job changes, only more so for lawyers, with issues of confidentiality and privilege (for starters). The last thing a lawyer needs who starts off on a new venture is to become enmeshed in the dispute with the past.