Coal mining is one source of air pollution caused in form of coal dust particle that may interfere with health of breathing if inhaled by human. Occupational risks often occurred may come from occupational factor or worker's behavior itself, ones of which are work shift and work period. This study aimed to determine relations of work shift, work period and occupational health and safety (OHS) culture with lung function of coal mining worker. This study was control case design with each amount of sample for case and control was 178 respondents. The study was conducted on October – November 2014 at PT X in South Borneo. Results based on chisquare test showed p value = 0.044 for work shift, 0.028 for work period and 0.013 for OHS culture. Based on logistic regression test results, p value for work shift was 0.01 with OR = 3.934. As conclusion, there is a relation between work shift with lung function, then there is no relation found between work period and OHS culture with lung function. Work shift is an independent variable most dominantly influencing the lung function.