This means that there is a significant difference between PI group and PII group on the musculoskeletal complaints. In another word, there is a decline of 25.69%. Accessibility friendly bathroom Seniors are not only safe to use also gives credence to the Elderly without the help of others and without fear of injury. In the PI obtained a score of 8.31 while the security of PII obtained a score of 16.49, an increase of safety and security of 98.4%. These results indicate that the ergonomics intervention proved to cause an increase in safety in the elderly in elderly-hostels of Bali Province. Accessibility interventions include the facilities such as bathtub, a handle or railing, a repair to a handled door, toilet seat, shower wash, and shower seat.