Wash. Rev. Code § 49.19.070
It is the intent of the legislature that any violence protection and prevention plan developed under this chapter be appropriate to the setting in which it is to be implemented. To that end, the legislature recognizes that not all professional health care is provided in a facility or other formal setting, such as a hospital. Many services are provided by home health, hospice, and home care agencies. The legislature finds that it is inappropriate and impractical for these agencies to address workplace violence in the same manner as other, facility-based, health care settings. When enforcing this chapter as to home health, hospice, and home care agencies, the department shall allow agencies sufficient flexibility in recognition of the unique circumstances in which these agencies deliver services.
RCW 49.19.070