In the case of an employee who was found to have been engaged in sexual harassment and who was disciplined, the disciplinary file is one element that we look at and that we retain for a length of time, depending on the disciplinary record of the employee. If the employee is discipline-free for a certain period of time, then you can't rely on that previous event, but it doesn't mean it's taken off the file.
The collective agreements and the working conditions guide us in how information is retained related to disciplinary action.