The Washington State Department of Labor & Industries has
consolidated fall-protection requirements in WAC 296-155, "Safety
Standards for Construction Work," into one set of requirements and
added new rules that went into effect April 1, including a
provision for a safety-watch system.
A safety-watch system is a "fall protection system as described
in WAC 296-155-24615(6), in which a competent person monitors one
worker who is engaged in repair work or servicing equipment on low
pitch roofs only." The rule states when one employee is conducting
any repair work or servicing equipment on a roof with a slope no
greater than 4:12 (18 degrees), employers are allowed to use a
A safety-watch system requires only two employees be on the roof
while the safety-watch system is being used—one employee
acting as the safety watch and one employee performing repair work
or servicing equipment. The employee performing the task must
comply with fall-hazard warnings...
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