In the increasingly knowledge and innovation-based economy in which the mobility of the workforce is vital, employees and ex-employees are considered to be one of the biggest threats to the existence of trade secrets. The interests of the former parties to the employment relationship are contradictory: employers want to safeguard their competitive position by limiting use of information and employees want to use that information to pursue their professional career. Magdalena Kolasa analyses existing guidelines that determine the extent to which former employees may use information learned...