It's really quite difficult to completely prevent these issues from arising.
The Group's upper management cannot possibly interfere with each and every detail of the subsidiaries as long as the company's operations are normal, the company's finances are in order, and the accounts balance; they typically won't intervene in the detailed management of the subsidiary's production workshops.
As for interpersonal relationships, they are unavoidable anywhere, but for a department to directly embezzle the benefits of over 2000 employees, misappropriate the overproduction bonuses, and the scrap reduction bonuses, this is no small issue and cannot be ignored.
Moreover, the amount involved is not negligible, especially in the case of the department's operations manager. If he took half for himself, the embezzled amount could easily be millions.
Embezzling millions in one year, in a few years it would be tens of millions.
