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Fall Protection - Washington (DOSH)

This talk follows Washington (WAC) rules · See the federal OSHA version →

Updated 2026-09-29

In this bundle Fall Protection & Heights

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Six feet is the number most construction workers in the United States carry around as the fall protection height. In Washington it is four. And the numbers above four — six feet, ten feet — are not general rules at all. They belong to specific tasks, and only to the people doing them. This Washington Fall Protection Toolbox Talk walks the crew through the rules the Division of Occupational Safety and Health at Washington L&I enforces: Chapter 296-880 of the Washington Administrative Code, the unified fall protection standard that construction fall protection moved into. The stakes are real. L&I's fatality research program counted 83 construction deaths in Washington from 2018 through 2022; ten of those workers fell from roofs and two from communication towers. In 2022 alone, 24 construction workers died — the most since WA FACE began counting in 1998 — and eight of them died from falls.

Where the boundary of this talk sits#

This talk is about what is different in Washington: the 4-foot default, the task-based 6- and 10-foot triggers, the hazards that need protection at any height, the roof rules, the written fall protection work plan, and the Washington numbers for rails, covers, harness systems, training, and crew meetings. It hands the deep versions to the talks that own them — harness fit and use to the harness talk, anchor selection to the anchor-point talk, clearance math to the fall-clearance talk, rescue and suspension trauma to the rescue talk, ladders to the ladder talks, and the federal Subpart M rules to the general fall protection talk. What this talk owns is the Washington rule, and the way it assigns a height to a task instead of to a place.

The anchor#

Here is the distinction that carries this whole talk: in Washington the fall protection height belongs to the task, not to the roof or the building — the default is four feet, and the higher numbers, six feet for roofing work on a low-pitched roof or for constructing a leading edge, ten feet for erecting structural members off the deck, for excavations, and for scaffolds, belong only to the person actually doing that task; so the electrician, the laborer, or the estimator standing next to the roofer is working at four feet while the roofer works at six, and below four feet the height stops mattering altogether for impalement hazards, dangerous equipment, and holes you can step into.

Four feet is the default#

Chapter 296-880 WAC, the Unified Safety Standards for Fall Protection, took effect on October 1, 2020, and has been amended since. It pulled Washington's fall protection rules for many industries into one chapter; the construction standard, Chapter 296-155 WAC, now says its fall protection requirements have been moved there. Section 296-880-30005 confirms the chapter applies to work under the scope of the construction standard.

The general rule is WAC 296-880-20005: the employer must ensure fall protection is provided, installed, and implemented when employees are exposed to fall hazards of four feet or more to the ground or lower level. It then lists where: walking and working surfaces, ramps, holes, openings, formwork and rebar, steep roofs, low-pitched roofs, hazardous slopes, and vehicles and rolling stock. Four feet is lower than the federal 6 feet in 29 CFR 1926.501(b)(1). A crew that came off a federal job, or learned its habits in another state, may be carrying a number that is too high for Washington.

The higher numbers belong to the task#

WAC 296-880-30005 is where the construction exceptions live, and each one is tied to an activity, not a location.

Six feet — roofing on a low-pitched roof, and building the leading edge. Employees exposed to fall hazards of six feet or more while engaged in roofing work on a low-pitched roof, or while constructing a leading edge, get a fall arrest, fall restraint, or positioning device system. The exception in the same section says employees not directly involved with constructing the leading edge, or not performing roofing work, must comply with the 4-foot rule. A safety monitoring system may be used for roofing work on a low-pitched roof.

Ten feet — erecting structural members, excavations. Employees exposed to fall hazards of 10 feet or more while engaged in the erection or placement of structural members get arrest, restraint, or positioning. But when that erection or placement is performed on or from a floor, deck, roof, or similar surface, the 4-foot rule applies. At excavations, employees directly involved in the excavation process and on the ground at the top edge, or working where appropriate sloping of the side walls has been implemented, are not covered by this requirement; the 10-foot requirement reaches employees who are not directly involved, and those on the protective system or any other structure in the excavation.

Ten feet — scaffolds. Under WAC 296-880-30030, each employee on a scaffold is protected from falling 10 feet or more to a lower level by a personal fall arrest system or guardrails.

Narrow exemptions. Section 296-880-30005(3) exempts the person installing or removing the anchor itself; pre-work and post-work inspection, estimating, or assessment on low-pitched roofs only — not on steep roofs, not while construction work is underway, and not when fall protection is already installed; and employees who must be on vehicles or rolling stock to do their jobs.

Now picture one low-pitched roof. The roofer applying the membrane is at six feet. The HVAC tech setting a curb ten feet from the edge is at four. The laborer carrying material to the roofer is at four. The estimator walking the roof before the job starts is exempt — but the same estimator walking it while the crew is working is not. On a Washington roof, the first question is not "how high are we?" It is "what is each person doing?"

Some hazards have no height#

WAC 296-880-10010 sets the rules that apply regardless of height:

  • Open-sided floors, walkways, platforms, or runways above or adjacent to dangerous equipment — the section names dip tanks and material handling equipment — are guarded with a standard guardrail system, at any height.
  • Holes an employee can trip into, step into, or step through are guarded by a cover of standard strength and construction or a standard guardrail system.
  • Employees are protected from falling into or onto impalement hazards — the section names reinforcing steel, exposed steel, and wood — regardless of height.

A two-foot fall onto a mixer or a mat of rebar is not a small fall. Washington writes it that way on purpose.

Roofs: the pitch decides the tools#

Washington defines a low-pitched roof as a slope equal to or less than 4 in 12, and a steep-pitched roof as a slope greater than 4 in 12. A hazardous slope is one where normal footing cannot be maintained without devices because of the pitch, the weather, or the surface.

Steep roofs. Regardless of the work activity, employees exposed to fall hazards of four feet or more on a roof with a pitch greater than 4 in 12 use a fall restraint system, a personal fall arrest system, or a positioning device system. WAC 296-880-20005(6) says it plainly: safety monitor systems and warning line systems are prohibited on steep-pitched roofs.

Hazardous slopes. Employees exposed to falls of four feet or more while performing construction work on a hazardous slope must use personal fall restraint or positioning device systems — the pitch or the frost has already taken away the footing an arrest system assumes.

Warning lines on low-pitched roofs. Under WAC 296-880-40040, during roofing work the warning line is erected not less than 6 feet from the edge of the roof. Where mechanical equipment is in use, it stays 6 feet back from edges parallel to the direction of the equipment's travel and not less than 10 feet from any edge perpendicular to it. On leading-edge work the line goes 6 to 25 feet from the edge. The line's lowest point, including sag, is no less than 36 inches and its highest point no more than 45 inches above the surface.

Safety monitors. WAC 296-880-40045 allows a safety monitor system with a warning line system during roofing work on low-pitched roofs — and only there. The warning line is not required when the roofing work is on a low-pitched roof less than 50 feet wide. The monitor may not be used when adverse weather creates additional hazards. The monitor is a competent person, performs no other duties while monitoring, and supervises no more than eight exposed workers at one time.

Material at the edge. Under WAC 296-880-40080, materials must not be stored within six feet of a roof edge unless guardrails are erected at the edge.

One more Washington difference: the federal controlled-access-zone playbook for leading edges does not transfer here. On a Washington leading edge, the warning line sits 6 to 25 feet back, and the people constructing the edge are protected by fall arrest or fall restraint.

The written plan at ten feet#

WAC 296-880-10020 requires a written fall protection work plan for each area of the workplace where employees are assigned and fall hazards of ten feet or more exist. The plan must identify all fall hazards in the work area; describe the method of fall arrest or fall restraint; describe the procedures for assembly, maintenance, inspection, and disassembly of the fall protection system; describe the procedures for handling, storage, and securing of tools and materials; describe the method of overhead protection for workers who may be in or pass through the area below; describe the method for prompt, safe removal of injured workers; and be available on site for inspection by the department.

Two parts of that rule change what happens on the ground. First, before employees are allowed into an area with fall hazards of ten feet or more, they must be trained and instructed in every item the plan covers. The plan is not a document in the trailer; it is a briefing the crew has already had. Second, the plan must describe how an injured worker gets down. If the answer is "call 911 and wait," the plan has not answered the question. The one place the plan is not required: where a guardrail system eliminates the fall hazard.

The equipment numbers#

Guardrails (WAC 296-880-40005). Top rail 39 to 45 inches above the walking surface; withstands at least 200 pounds applied within two inches of the top edge in any outward or downward direction without deflecting below 39 inches; intermediate rail halfway between the top rail and the floor; posts no more than eight feet apart; toeboards at least three and one-half inches high.

Covers (WAC 296-880-40015). Hole covers support at least twice the weight of the employees, equipment, and materials that may be imposed on them at any one time; covers in roadways carry at least twice the maximum intended truck rear-axle load. Every cover is secured against accidental displacement by wind, equipment, or employees. Temporary covers are color coded or marked with the word "hole" or "cover."

Personal fall arrest (WAC 296-880-40020). A full body harness must be used. Anchorages support 5,000 pounds per employee, or 3,000 pounds when used with a self-retracting lifeline that limits free fall to two feet or less or a shock-absorbing lanyard that restricts forces on the body to 900 pounds or less — or they are designed, installed, and used under a qualified person as part of a complete system with a safety factor of at least two. The system is rigged for a maximum free fall of six feet with no contact with any lower level, limits the arresting force to 1,800 pounds, and stops the employee within three and one-half feet of deceleration distance. For fall restraint, WAC 296-880-40025 requires anchorages that can support four times the intended load.

Inspection and rescue (WAC 296-880-10005). Every component is inspected before each use according to the manufacturer's specifications for mildew, wear, damage, and other deterioration, and defective components are removed from service when their function or strength has been affected. And the employer must plan for and provide prompt rescue of employees in the event of a fall, or assure their self-rescue capability.

Training that has to be shown, not just given#

WAC 296-880-10015 requires training for each employee exposed to fall hazards, delivered by a competent person. The employee must demonstrate an understanding of the training and demonstrate the ability to use fall protection properly — sitting through it is not enough. Retraining is required when the employer has reason to believe the understanding, motivation, and skills have not been retained, including after changes in the workplace or in the fall protection used, or when an employee's work habits show it. And the training is documented in writing: the employee's name, the date or dates, the subjects, and the name or signature of the competent person who trained them, or the signature of the employer or designee.

Where the duty sits#

The 4-foot default is WAC 296-880-20005. The at-any-height rules are 296-880-10010. The task-based 6- and 10-foot construction triggers and their exemptions are 296-880-30005, and scaffolds at 10 feet are 296-880-30030. The written work plan at 10 feet is 296-880-10020. Inspection and rescue are 296-880-10005; training is 296-880-10015. The equipment specifications are 296-880-40005 (guardrails), 40015 (covers), 40020 (arrest), 40025 (restraint), 40040 (warning lines), 40045 (safety monitors), and 40080 (roof-edge material storage). For contrast, the federal construction trigger is 29 CFR 1926.501(b)(1), at 6 feet.

And this meeting has its own rule. Under WAC 296-155-110(5), construction employers hold crew leader-crew safety meetings at the beginning of each job and at least weekly thereafter, tailored to the particular operation. The meetings review any walk-around safety inspection, any citation, and any accident investigation since the last meeting; attendance and subjects discussed are documented; minutes are kept where most of the site's employees report each day, retained for at least one year, and made available to the department on request. The crew's part is to leave this one knowing which height applies to their task today.

What can go wrong?#

  • A crew that came off a federal job works a 5-foot mezzanine edge with no protection because "the rule is six feet."
  • The electrician on a low-pitched roof works outside the roofer's warning line with no protection, because "the roofers are at six feet."
  • A safety monitor is used on a 6:12 roof — where Washington prohibits both monitors and warning lines.
  • The safety monitor is watching eleven people, or is also running the crew, or keeps going when the rain starts.
  • A warning line on a roofing job is set 4 feet from the edge, or 6 feet from an edge the roofing machine is driving toward.
  • A bundle of shingles is staged 3 feet from an unguarded roof edge.
  • A laborer steps backward off a 3-foot platform onto exposed rebar, on a site where "it's under four feet" was the reason nobody capped it.
  • The written work plan says "call 911" for rescue, and nobody on site has been trained on it.
  • Training records show a sign-in sheet but no subjects, no dates, and no trainer's name.

How do we manage this properly?#

  • Start at four feet — everyone, every edge, unless a specific WAC 296-880-30005 task exception applies to that person.
  • Assign heights to tasks, not places — say who is roofing, who is building the leading edge, who is erecting structural members, and put everyone else on the 4-foot rule.
  • Guard the no-height hazards — rebar and other impalement hazards, dangerous equipment, and holes, at any height.
  • Match the tool to the pitch — steep roofs get restraint, arrest, or positioning only; low-pitched roofing gets warning lines 6 feet back, 10 feet ahead of mechanical equipment, and a monitor only if the rules allow it.
  • Write the plan at ten feet and brief it first — every hazard, the method, the procedures, overhead protection, and how an injured worker gets down.
  • Build to the Washington numbers — rails 39 to 45 inches, covers at twice the load and secured and marked, full body harness, 5,000-pound anchorage or a qualified-person design.
  • Inspect before every use and plan the rescue — before anyone ties off, not after someone is hanging.
  • Train, test, document — a competent person trains, the worker demonstrates, and the record shows who, when, what, and by whom.

Before you start#

Walk the area with the crew and find every edge, opening, and roof surface where the fall is four feet or more, and every impalement hazard, piece of dangerous equipment, or hole at any height. For each person, name the task and the height that applies to it. If any fall hazard is ten feet or more, pull out the written fall protection work plan, read the rescue section out loud, and confirm everyone going up has been trained on it. On a roof, confirm the pitch: over 4 in 12 means no monitors and no warning lines. On a low-pitched roof, check the warning line distance and height, and confirm the monitor is a competent person with no other duties and no more than eight workers. Lift and check the covers. Inspect every harness, lanyard, and anchor before it is used.

Talk it over#

  • What is the fall protection height for your task today — and for the person working next to you?
  • Where on this site is there a hazard that needs protection at any height?
  • If you fell into your harness right now, what does our written plan say happens next?
  • Who here has worked under the federal 6-foot rule? Where would that habit get you in trouble in Washington?
  • When were you last trained on fall protection, by whom, and could you show us how you inspect your harness?

The bottom line#

In Washington the height belongs to the task. Four feet is the default for everyone. Six feet is only for the person roofing a low-pitched roof or building the leading edge. Ten feet is only for erecting structural members off the deck, for excavations, and for scaffolds. Impalement hazards, dangerous equipment, and holes need protection at any height. Steep roofs take restraint, arrest, or positioning, never monitors or warning lines. At ten feet there is a written plan, the crew is trained on it before they go in, and it says how an injured worker gets down. Before anyone starts, ask each person what they are doing — because that, not the roof, tells you their number.

Frequently asked questions about Washington fall protection#

What is the fall protection height in Washington?

Four feet is the default. WAC 296-880-20005 requires fall protection when employees are exposed to fall hazards of four feet or more to the ground or lower level. Higher triggers exist only for specific construction tasks in WAC 296-880-30005: six feet for roofing work on a low-pitched roof and for constructing a leading edge, and ten feet for the erection or placement of structural members not performed on or from a floor, deck, or roof, and for certain excavation work. Scaffolds are ten feet under WAC 296-880-30030. Some hazards — impalement, dangerous equipment, holes you can step into — require protection regardless of height under WAC 296-880-10010.

The roofers on our job are at six feet. Does that apply to the rest of us on the roof?

No. The six-foot trigger in WAC 296-880-30005(1) covers employees engaged in roofing work on a low-pitched roof or constructing a leading edge. The same section's exception says employees not directly involved in constructing the leading edge, or not performing roofing work, must comply with the four-foot rule. The electrician, the HVAC tech, and the laborer on that roof are at four feet.

Can we use a safety monitor on a roof in Washington?

Only during roofing work on a low-pitched roof — a slope of 4 in 12 or less — used with a warning line system, although the warning line is not required on low-pitched roofs less than 50 feet wide. Under WAC 296-880-40045, the monitor is a competent person, performs no other duties while monitoring, and supervises no more than eight exposed workers at a time, and the system may not be used when adverse weather creates additional hazards. On a steep roof, WAC 296-880-20005(6) prohibits both safety monitors and warning lines.

When do we need a written fall protection work plan?

Wherever employees are assigned and fall hazards of ten feet or more exist, under WAC 296-880-10020. The plan identifies all fall hazards, describes the method of fall arrest or restraint, covers assembly, maintenance, inspection, and disassembly of the system, handling and securing of tools and materials, overhead protection for workers below, and prompt, safe removal of injured workers, and is available on site for the department. Employees must be trained on it before they enter those areas. It is not required where a guardrail system eliminates the fall hazard.

How far from the edge does the warning line go?

For roofing work, WAC 296-880-40040 puts the line not less than six feet from the roof edge. Where mechanical equipment is used, it stays six feet from edges parallel to the equipment's direction of travel and not less than ten feet from any edge perpendicular to it. On leading-edge work it goes six to twenty-five feet from the edge. The line's lowest point, including sag, is no less than 36 inches and its highest point no more than 45 inches above the surface.

What does a hole cover need in Washington?

Under WAC 296-880-40015, it must support at least twice the weight of employees, equipment, and materials that may be imposed on it at any one time, be secured to prevent accidental displacement by wind, equipment, or employees, and — if temporary — be color coded or marked with the word "hole" or "cover." A cover in a roadway must support at least twice the maximum intended truck rear-axle load. And a hole someone can trip, step into, or step through must be covered or guarded at any height under WAC 296-880-10010.

How often do we have to hold safety meetings on a Washington construction site?

At the beginning of each job and at least weekly thereafter, under WAC 296-155-110(5). The crew leader-crew meetings are tailored to the operation, review recent walk-around inspections, citations, and accident investigations, and document attendance and the subjects discussed. Minutes are kept where most of the site's employees report each day, retained for at least one year, and made available to the department on request.

Download the Washington fall protection toolbox talk PDF#

Download this Washington Fall Protection Toolbox Talk as a printable PDF in English and Spanish for your next crew meeting, and read it at the base of the roof before anyone says "it's only four feet."

Related toolbox talks#

Sources#

Written by FieldSafetyTalk's safety professional — a CSP, ASP, CHST and OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.

Hazards covered

fallsroof edgesfloor openings
By Mustafa Tok, CSP, ASP, CHST

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