Therefore, no matter whether an enterprise or institution is mainly engaged in production and operation activities, as long as there are departments engaged in production and operation activities in the unit, the enterprise or institution belongs to the enterprise or institution stipulated in Article 134 of the Criminal Law. The relationship between enterprises and institutions and their employees is various, including contract workers, hired workers, long-term workers, temporary workers, etc., but it does not affect whether their employees can become the subject of this crime.