A logistics company has hired a new operator to work in the warehouse, in activities related to the reception and dispatch of merchandise and its correct location during the time it remains in the warehouse.

On your first day of work, and once the warehouse manager has shown you the facilities, explained the work procedures and given the appropriate instructions and criteria for the correct location of the stored products, you have been entrusted with unloading a truck. that just arrived.

The new operator has used a forklift that has been assigned to him and has begun the assigned work, proceeding in accordance with the established procedure. On one of the first unloading trips, on the way to the location where the merchandise had to be deposited, it was found that there were boxes of some item deposited in the aisle, on one side of it, but of sufficient size to make it difficult for the forklifts to pass. . Trying to avoid the boxes, he got so close to the other side of the aisle that he hit the shelf on that side with the side of the forklift, causing a pallet of items to fall from the top that was incorrectly placed, as it had not been inserted to the bottom. of the shelf as procedurally established.

Fortunately, the impact of the pallet that fell into the void from the top of the rack was with the forklift, only hitting the driver by rebound. However, the driver was hit in the head, causing him to lose consciousness.

Furthermore, the new operator was not wearing a helmet as required. The warehouse manager should have given him the training on occupational health and safety established in the company for his job, as well as the individual protective equipment within which is a helmet, but due to forgetfulness and due to the urgency of receiving the goods from the newly arrived truck had not done so. On the other hand, the sign indicating the prohibition of being in the warehouse without wearing a helmet protecting your head was covered by a series of boxes and the worker, who was new, had not been able to see it.

Question:

Observe and determine the basic causes that are at the origin of this accident using the Cause Tree Method, as well as propose measures to prevent future accidents.