psychological effects, such as disorders, sleeplessness
and going to sleep late, irritability and stress; and finally
effects on work performance, such as reduction of
productivity and misunderstanding what is heard (Job,
1996; Evans and Hygge, 2000; Stansfeld et al., 2000;
Passchier-Vermeer and Passchier, 2000; Quis, 2001;
Marius, 2005).