In the past two years, we have observed a new trend in some legal markets. For a variety of reasons, senior associates and non-equity partners are leaving their law firms to start their own. 

A common factor in these departures, however, is a conclusion that there no longer is a persuasive business case to remain in the firm, and that, notwithstanding the risks, the opportunities are better in one's own firm.

Here are some things to think about.