The Z133 Safety Standard was developed for the arboriculture industry under the procedures of the American National Standards Institute. The 2017 revision provides the most current criteria in the United States for arborists and other workers engaged in arboricultural operations:

General safety.
Electrical hazard.
Use of vehicles and mobile equipment.
Portable power hand tools.
Hand tools and ladders.
Climbing ·Work procedures.

This publication provides an essential guide for federal, state, and municipal authorities in the USA in drafting regulations.