Safety entrance exam (exam platform Moodle): New employees and students have to complete a safety entrance test within the first 3 weeks after start of employment (optionally in German or English and on different subjects. The exam contains multiple-choice questions (put together by a random generator) that have to be answered within 30 min. In each case one answer is correct. New employees are automatically invited to the safety entrance exam by the personnel division and students are invited by the laboratory course supervisor. The corresponding superior (usually the professor) will decide on further steps when people do not pass the exam several times.