Slip & fall are major occupational safety & health incidences. This research was conducted for floor friction coefficient measurements in four restaurants in each of Chinese, western, and western style fast food restaurants. Walkway, sink, and cooking areas for each of the restaurants were selected and 8 points on the floor in each of the area were measured. In addition, research personnel also interviewed the kitchen workers for their slip & fall experience at work. The friction coefficient measurements results indicated that Chinese style restaurants had significant lower averages and high variation in friction coefficient. This implies such floor environments had high risk of slip & fall. The worker interview results, however, showed that fast food restaurant workers had higher percentages in both self- slip-fall experience and witness of slip-fall of others than the other two types of restaurant. This could be attributed to the fast twisting of body or fast walking of the workers in the fast food kitchens for customer service. The risk of slip & fall in dining service industry should consider not only floor friction environment but also the motion of the workers. Motions such as fast twisting of the trunk and fast walking should be prohibited.