If you read the act carefully, you will see that this is exactly how it was worded by the legislator at the time. The board of directors must fulfil its mandate. I am trying to find answers to your question to explain that the onus is on the board of directors to fulfil its mandate.
Unfortunately, I only have the English version of the text. Therefore, if you look closely at the wording of the act, you will note, as I was saying, that the board of directors is under an obligation to establish policies and to apply them in accordance with legislation. For instance, the board of directors is responsible for enforcing human rights that govern our society and that are generally recognized internationally.