The characteristics of the work environment may increase a risk particularly of back injury if:

• there is not enough room, in particular vertically, to carry out the activity,

• the floor is uneven, thus presenting tripping hazards, or is slippery in relation to the worker's footwear,

• the place of work or the working environment prevents the handling of loads at a safe height or with good posture by the worker,

• there are variations in the level of the floor or the working surface, requiring the load to be manipulated on different levels,

• the floor or foot rest is unstable,

• the temperature, humidity or ventilation is unsuitable.