Ulm University gives its staff a guideline for voluntary feedback talks between employees and supervisors. The preparation sheet for employees, who give their supervisors feedback, sets this rule. Sprechen Sie über das Arbeitsverhalten beziehungsweise über die Arbeitsergebnisse und nicht über Persönliches. Talk about work conduct or work results, and not about personal matters.
Criticism is to be put forward sachlich, factually, without personal attacks. The talk creates no legally relevant facts or documents, and it is not part of the personnel file.