Blowing the whistle on a company or a client you represent will likely upend your professional and personal life, say former informants and the lawyers who represent them, so it's best to consider the possible consequences.

This year, two general counsels turned whistleblowers saw their claims validated, but only after years of investigations, discovery, depositions, motion hearings and, in one case, a three-week jury trial.

In February, former Bio-Rad Laboratories Inc. general counsel Sanford “Sandy” Wadler was awarded $11 million in damages by a San Francisco jury. In late March, at least partly because of cooperation by former ZTE USA general counsel Ashley Yablon, ZTE's parent companyZTE Corp. pleaded guilty to conspiring to violate the International Emergency Economic Powers Act by illegally shipping surveillance equipment to Iran.