The final questionnaire was composed of three domains -- personal and institutional data, information regarding WMSDs, and work-related ergonomic factors (see Appendix). The first part was designed to obtain personal information (gender/age/marital status/child-bearing history/height/weight/highest degree earned/academic major) and work-related information (years of experience in EI/work days per week/work hours per day/break time/nap habit/exercise habit/type of EI service provided/age range of children served/diagnosis of children served/EI coworkers in the same class/personal protective equipment usage while working/feeling of stress). The second part covers the information regarding WMSDs (musculoskeletal injury occurrence/regions/severity/duration since onset/duration of symptoms/frequency of occurrence/causing sick leaves/considering job change/affecting work performance/ participating related continue education courses). The design of this domain was in reference to Standardized Nordic Musculoskeletal Questionnaire (NMQ) (Kuorinka et al., 1987). The term “musculoskeletal disorders” here refers to work-related injuries happened at any time during EI educators’ work hours, which can last more than a day and affect daily activities. The investigation covered nine body regions including neck, shoulder, upper back, elbow, hand/wrist, lower back, thigh, knee, and ankle/foot. The disorder was rated 0 to 4 from no pain to unbearable pain. Subject responded with score 1 and above was considered suffering from WMSDs. The third domain involved work-related ergonomic factors (diaper changing/feeding/toileting/grooming/transferring/rehabilitation). (author abstract)