Table 1. Demographic characteristics and percent workers that experienced health problems related to work, their work characteristics and the environmental characteristics.

	Percent of workers exposed
	Directly (n = 102)	Indirectly (n = 169)	Not exposed (n = 24)
Demographic
Men/women	93/7	97/3	88/12
Smokers	13	16	19
Health problems related to work
Irritated, stuffy or runny nose	37**	21	8
Cough	17**	6	4
Dry hands, itching or red skin	11	10	8
Fatigue	12*	22	25
Headache	4	4	8
Work situation
Stimulating work	55	51	29
Too high work rate	20*	10	25
Influence possibilities	34	30	8
Environmental work problems
Dry air	11*	20	38
Odour	20	19	33
Dust and dirt	29	35	57

All health problems and environmental factors were frequently experienced (defined as at least once a week).

p<0.05 and

p<0.01 between directly and indirectly exposed worker.