3.5.3. Initial Situation: Reduction of Sick Days in Number of Days

Studies have shown that in greened offices with correspondingly improved humidity, sickness-related days of absence decreased by up to 3.5 days per employee [55]. The calculations based on the costs to be attributed to the greening and the saved wage costs calculated with Equation (2) show that the greening systems installed in the rooms are rewarded after only 1.4 to 6.3 years.

This large difference between the considered rooms or rather the exception with 6.3 years is especially due to the size of the greening with troughs in building A.
