Application
792 This Part applies to arboriculture activities that involve pruning, repairing, maintaining or
removing trees or cutting brush if a worker works at height and depends on the tree for support.

Safe work practices
793(1) An employer must develop and implement safe work practices and procedures that include
(a) the assessment of hazards at the work site,
(b) worker training, including hazard recognition,
(c) the selection, limitation, operation and maintenance of equipment and personal protective
equipment,
(d) the use of work positioning systems and fall protection systems, and
(e) emergency rescue.
793(2) If reasonably practicable, an employer must involve affected workers in the development and
implementation of the safe work practices and procedures.

Fall protection and work positioning
794(1) If it is not reasonably practicable to comply with the fall protection requirements of section
139, an employer must ensure that a worker uses a work positioning system.
794(2) A worker must use or wear the work positioning or fall protection system the employer
requires the worker to use or wear.

Harness standards
795(1) An employer must ensure that a harness manufactured on or after March 31, 2023 and used as
part of a work positioning system is approved to
(a) NFPA Standard 1983, Standard on Fire Service Life Safety Rope and System Components,
2006 Edition, as a Class II or Class III life safety harness,
(b) CEN Standard EN 813: 1997, Personal protective equipment for prevention of falls from a
height — Sit harnesses,
(c) CSA Standard Z259.10-18, Full body harnesses,
(d) ANSI/ASSE Standard Z359.1-2007, Safety requirements for personal fall arrest systems,
subsystems and components, or
(e) CEN Standard EN 361: 2007, Personal protective equipment against falls from a height — Full body harnesses.
795(2) Subsection (1) does not apply to harnesses in use before April 30, 2004.

Knot exemption
796 Section 150.3 does not apply to arboriculture activities to which this Part applies.