Separating what the cleaner closes from what the site closes
On a site with continuous operations the cleaner shares the building with people who are working. A dock door standing open at three in the morning may be entirely correct. So the instruction cannot be to check that everything is shut. It has to name the specific things the cleaning attendance is responsible for: the store cupboard, the amenity block, any area released to the crew and locked behind them, and the external door used for access.
Everything else is observation rather than responsibility. If the cleaner sees a door that is unusual, they report it. They do not close it, because closing a door on an operating site can strand a forklift driver or trip an interlock. Getting this line right protects both the client and the cleaner, and it makes the report meaningful when one is made, because the crew is not reporting routine operational conditions.
