In the production of RSS, old rubber-wood is burned as a fuel to dry rubber sheets in the smoke room. The RSS production is about 40-50 tons per cooperative during the peak season while for each ton of RSS, about 1.2-1.5 ton of fuel-wood is consumed. Each cooperative does not have any pollution control devices and the smoke is released into the factory workplace area through the ventilating lids on the roof of drying room which is directly opened to the inside of factory building. Therefore the air pollution in the workplace by smoke may be under serious situation. Workers also need to operate inside the smoke room periodically. Since the smoke from rubber-wood burning has been shown to contain extremely large concentration of hazardous pollutants such as polycyclic aromatic hydrocarbons (PAHs), which are the carcinogenic agents. Such situation could result in serious influences on workers’ health. In order to improve this situation, detailed information on air pollutants in the workplace and heath situation of workers is required. Moreover, workers’ opinions to their job and working environment are important to propose appropriate pollution control devices or facilities. However, all information is very limited.