By Related Rule (WAC)

WISHA provides rule guidance to staff through two types of policies:

  1. WISHA Interim Operations and Interpretive Memoranda (WIIM)
  2. WISHA Regional Directives (WRD)

The WIIMs and WRDs do not:

  • Substitute for the rule or requirement referenced
  • Create additional obligations for employers

Policies related to Chapter 296-307, WAC.

WISHA policies in effect as of 5/4/2018. View all policies by Related WAC code.

Referenced WAC Policies

Agriculture, Safety standards for
(Chapter 296-307, WAC)

Non-Agricultural Use of Pesticides (WIIM 98-2-A)
Pesticides in Agriculture (WRD 33.25)
Head Protection and All-Terrain Vehicles (ATVs) (WRD 5.92)
Sheepherder Housing (WRD 33.72)
Cholinesterase Monitoring (WRD 33.27)
Rollover Protective Structures (ROPS) and Low-Profile Tractors (WRD 33.20)
Outdoor Heat Exposure Enforcement Procedures (WRD 10.15)
Bathroom and Toilet Facility Access (WRD 5.98)
Field Sanitation for Agriculture Workers (WRD 33.80)

Cholinesterase Monitoring
(WAC 296-307-148 through 14845)

Cholinesterase Monitoring (WRD 33.27)


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