after-acquired evidence

Definition of after-acquired evidence 

employment law

: evidence of an employee's wrongdoing that is discovered by an employer after the employee's termination but that could have been the basis for termination

An employer can rely on after-acquired evidence of resume fraud as a complete defense only if it can prove that the employee's concealment undermined the very basis on which he or she was hired.

— National Law Journal, 30 June 1997