ANSI Z133 Safety Standard

The ANSI Z133 standards are the accepted industry safety standards for tree care work, and are essential to read and implement to run a safe tree care business.

The ANSI Safety Requirements for Arboriculutral Operations have been updated to the ANSI Z133-2017 with input from industry professionals. Compliance with the Z133 standard is voluntary, but OSHA may cite a section of the Z133 when they can't find language in OSHA standards.

The Z133 is a helpful guide to General Safety, Electrical Hazard, Use of Vehicles and Mobile Equipment, Portable Power Hand Tools, Hand Tools and Ladders, and Work Procedures. Also includes glossary, log weight chart, aerial rescue workflow, and other useful appendices.