Ms. Siegel says she and CEO Edward Breen often disagree on an employee's advancement potential.

WSJ: How to Win an Argument With the Boss

Under Edward Breen, Mr Kozlowski's successor, Tyco brought in outside lawyers and accountants to comb through four years' worth of company records.

ECONOMIST: Tyco: Not guilty, your honour | The

No way, scoffs General Instrument's chief executive, Edward Breen.

FORBES: Boxed in?