[Evaluation] of chronic dust-induced bronchitis as an occupational disease].

Recommendations for announcement and legal recognition of dust induced chronic bronchitis are presented. They rely on practice and aim for improvements and support for decision finding in medical reports. Basic criteria for legal recognition are intensity and duration of exposure, temporal relations between development of disease and exposure as well as type and grade of disease. The problem of demarcating non-occupational factors of influence is discussed. Legal recognition of dust induced bronchitis as an occupational disease can be achieved in a a special procedure.