The 5 Do’s & 6 Don’ts of Scaffold Safety in Construction

In short:

• Scaffolding safety in construction comes down to using properly erected, competently inspected scaffolds and following clear do’s and don’ts to control fall, electrocution, and struck‑by hazards.
• Workers must be trained by a qualified person on scaffold hazards, correct use, safe access, and load capacity before they ever step onto a scaffold.
• A competent person has to inspect the scaffold before each shift and supervise any scaffold building, dismantling, moving, or alteration.
• Crews should always wear appropriate personal protective equipment (PPE), use required fall protection, and maintain clean, stable platforms and safe climbing practices.
• Workers should never overload scaffolds, improvise extra height with ladders or boxes, use damaged or incomplete scaffolds, or work on platforms made slippery by ice, mud, or severe weather.

About 1 in 5 of all workplace deaths happen on a construction site, according to the U.S. Bureau of Labor Statistics (BLS). By 2024, the Occupational Safety and Health Administration (OSHA) reported 38% of construction fatalities in the U.S. were from falls to a lower level. Furthermore, the Centers for Disease Control (CDC) identifies construction as the sector with the highest frequency of fall-related deaths.

Scaffolding is one of the most common places where those falls happen. Getting scaffold safety right means knowing who's responsible before work starts, what OSHA requires before anyone steps on a platform, and what fall protection applies to the specific type of scaffold your crew is using.

Here’s what you need to know.

What are the basic scaffolding safety rules in construction?

Basic scaffolding safety rules scaffolds must be erected, altered, and dismantled only by trained workers under the direct supervision of a competent person, and that they are inspected before each work shift to confirm they are safe and complete.

Workers must receive scaffold-specific training from a qualified person, so they understand hazards like falls, electrocution, and falling objects, as well as safe use, material handling, and load limits. They also need appropriate PPE, including hard hats and, where required, personal fall arrest systems anchored so a worker cannot free‑fall more than six feet.

They must follow practical do's and don’ts in daily use:

• keep platforms clear
• stay within load limits
• use proper access
• avoid damaged or slippery scaffolds and unsafe weather conditions.

Why is scaffolding safety so important on construction sites?

Falls are the leading cause of construction worker deaths, and the numbers from the BLS prove it. In 2023, 38.5% of all construction fatalities were caused by falls, slips, or trips. In 2024, 389 of the 1,034 construction fatalities in the U.S. were fatal falls to a lower level, and scaffolding is one of the primary places where those falls happen. The combination of widespread use and severe consequences makes scaffold safety a core priority on any jobsite.

Working safely on scaffolds is ultimately about one question: is the scaffold safe to work on? Construction scaffolding safety depends on several factors:

• If it was put together by a professional.
• If it was inspected by someone competent.
• If the worker on it uses the right protective equipment.
• If the worker on it performs consistent safe-use practices, every single shift.

Example of dangerous scaffolding in construction, showing prohibited "lean to" scaffold, supported by a dumpster (IMAGE: OSHA)

What does OSHA require for scaffold training?

OSHA’s scaffold standards for construction are detailed, so this section focuses on the essentials and points you to the full standard (29 CFR 1926 Subpart L) for specifics.

Who must provide scaffold training?

Scaffold training must be conducted by a qualified person. OSHA defines a qualified person as someone who has a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience has demonstrated their ability to solve problems related to the work or subject matter.

What has to be covered in scaffold safety training?

At minimum, scaffold training must include:

• Identification of electrocution, fall, and falling‑object hazards associated with scaffolds.
• Procedures for controlling those hazards (for example, fall protection, securing tools and materials, and maintaining safe clearances from power lines).
• Proper use of the scaffold, including access, movement, and working positions.
• Safe material handling on the scaffold.
• Load capacities of the specific scaffold systems being used.

When is retraining required?

Workers must be retrained when:

• Conditions at the jobsite change and introduce new hazards.
• The type of scaffold, fall protection, or falling‑object protection changes.
• A supervisor determines that an employee’s prior training is not being adequately applied or retained.

What is the role of a competent person in scaffold safety?

OSHA defines a competent person as someone who can identify existing and predictable hazards that are unsanitary, hazardous, or dangerous, and who has the authority to take prompt corrective action.

For scaffolding, a competent person must:

• Inspect the scaffold before each work shift to confirm it is safe and in proper working order.
• Supervise all erection, dismantling, alteration, and moving of scaffolds. Only trained personnel may perform this work, and only under their direct supervision.
• Order immediate corrections or removal from service if the scaffold is damaged, incomplete, or otherwise unsafe.

If you are ever unsure about a scaffold’s safety, you should stop and check with a supervisor or the competent person before use.

How do “competent” and “qualified” differ for scaffold work?

Yes, there is a difference between "competent" and "qualified." OSHA uses two specific terms:

• A competent person is someone who can recognize existing and predictable hazards that are dangerous to employees and has the authority to correct them.
• A qualified person is someone with a recognized degree, certificate, professional standing, or extensive knowledge, training, and experience who can solve or resolve problems related to the work.

On scaffolds, competent persons focus on day‑to‑day safety and inspection, while qualified persons are responsible for training and, in many cases, design and configuration decisions.

What are the key scaffolding safety do’s?

1. Get properly trained before using a scaffold

Do not step onto a scaffold until you have been trained by a qualified person on:

• Types of scaffold hazards (falls, electrocutions, falling objects).
• How to use that specific scaffold system safely.
• How to handle materials while maintaining balance and platform integrity.
• The scaffold’s maximum intended load and how to stay within it.

2. Confirm inspection and oversight before each shift

Before using any scaffold:

• Verify that a competent person has inspected it prior to the start of the work shift.
• Make sure it appears complete. That means no missing planks, guardrails, toe boards, debris nets, or protective canopies.
• Confirm that any erection, dismantling, moving, or alteration is being done only by trained workers under competent supervision.

3. Wear proper PPE and secure your tools

Workers on, under, or around scaffolds should:

• Always wear a hard hat.
• Wear sturdy, non‑skid work boots for traction on planks.
• Consider tool lanyards or tethering systems to prevent dropped‑object incidents.

4. Stay aware of others above, below, and around you

Situational awareness is part of scaffold safety:

• Watch for coworkers working overhead or below your platform.
• Coordinate movements so you are not working directly under someone else’s task area.
• If you see unsafe behavior or improper scaffold use, stop work in that area and notify a supervisor.

5. Use and inspect fall protection when required

When personal fall arrest systems (PFAS) are required for the scaffold type and height:

• Inspect harnesses, lanyards, lifelines, and connectors before each use for wear, damage, or contamination.
• Anchor to a secure point that will not allow more than a six‑foot free fall before the system arrests the fall.
• Follow OSHA’s requirements for fall protection for your specific scaffold type under Subpart L.

What are the most important scaffolding safety don’ts?

1. Don’t leave materials or tools on platforms

Left‑behind items can be blown off, kicked off, or create trip hazards for the next crew. At the end of each shift, make sure all of the following are removed from scaffolding:

• Tools
• Fasteners
• Loose materials.

2. Don’t overload the scaffold

Overloading is a common cause of failure:

• Know the scaffold’s maximum intended load from your training and the manufacturer’s information.
• In most cases, scaffolds must be capable of supporting at least four times the maximum intended load, but that is a design requirement and not permission to overload them.
• Factor in people, tools, stored materials, and any transmitted loads (for example, from hoists or chutes).

What's wrong with this setup? OSHA says, "This scaffold is five bucks high and not tied to anything. The man on the edge of the roof has no fall protection. The walkway is questionable, as are the plywood platforms." (IMAGE: OSHA)

3. Don’t improvise extra height

Never:

• Stand on boxes, buckets, or pallets on top of a platform to reach higher.
• Place portable ladders on a scaffold deck to gain extra height.
• Use stilts unless guardrails have been raised so the top rail is still at the proper height relative to your elevated standing position.

If you cannot safely reach your work, request that the work platform be raised or reconfigured.

4. Don’t use damaged, altered, or incomplete scaffolds

Take a scaffold out of service and notify a supervisor immediately if:

• Structural components appear bent, cracked, corroded, or otherwise damaged.
• Parts are missing, such as planks, guardrails, mid rails, toe boards, debris nets, or canopies.
• You suspect someone has tampered with or altered the scaffold without authorization.

Never try to repair or modify the scaffold yourself unless you have specific training in scaffold erection and are working under a competent person’s direction.

5. Don’t work on slippery planks or in severe weather

Avoid using a scaffold when:

• Planking is covered with ice, snow, mud, wet leaves, or other debris that could cause slips.
• Wood planks are worn smooth and become slick when wet.
• Weather conditions include heavy rain, sleet, ice, snow, or strong winds.

All snow, ice, mud, and debris should be removed before use, and the competent person should decide whether conditions are safe to work.

6. Don’t climb where you shouldn’t, or with tools in hand

Safe access is mandatory:

• Do not climb scaffold frames, cross‑braces, or any structural member not designed as a ladder.
• Always use a fixed ladder, internal access stairway, or built‑in ladder whose design complies with OSHA requirements. There should be a secure handhold above the platform.
• Never climb while holding materials or tools. Hoist tools and materials up separately using a rope and bucket, material hoist, or other safe lifting method.

Where can contractors find the full OSHA scaffold standards?

All OSHA scaffold requirements for construction are in 29 CFR 1926 Subpart L – Scaffolds. This includes:

• Scope and definitions (1926.450)
• General requirements (1926.451)
• Additional requirements for specific scaffold types (1926.452)
• Aerial lifts (1926.453)
• Training requirements (1926.454)
• Scaffold specifications (Appendix B)
• Fall protection and access criteria (Appendix B)
• National consensus standards (Appendix C)
• Training topic lists (Appendix D)
• Illustrative drawings (Appendix E)

Contractors should use Subpart L alongside manufacturer instructions and their own safety programs to build scaffold plans and training that go beyond the bare minimum compliance.

There's a lot wrong with this setup, OSHA says, including using ladders to support the scaffolding, as well as doing all of this right on top of live electrical wires. (IMAGE: OSHA)

Frequently Asked Questions (FAQ)

What are the three main hazards of working on scaffolds?

The primary hazards are falls from height, electrocution (often from working too close to energized power lines), and being struck by falling tools, debris, or materials from above. Good design, guardrails or personal fall arrest systems (PFAS), proper clearances, and housekeeping all work together to control these risks.

When is fall protection required on scaffolds?

OSHA’s requirements vary by scaffold type, height, and task, but in general, fall protection is required when workers are 10 feet or more above a lower level. Depending on the scaffold, this may be a guardrail system, a personal fall arrest system, or the option to use either, as specified in Subpart L.

Who is allowed to erect or dismantle a scaffold?

Only properly trained personnel working under the direct supervision of a competent person may erect, dismantle, alter, or move a scaffold. Untrained workers should never attempt to change scaffold configurations on their own.

How often should a scaffold be inspected?

A competent person must inspect each scaffold before every work shift and after any event that could affect its structural integrity, such as severe weather or impact. Workers should also perform quick visual checks before climbing and report any issues immediately.

Can you work on a scaffold in high winds or storms?

Scaffold work should be stopped during adverse weather such as heavy rain, sleet, ice, snow, or strong winds. These conditions can make planks slippery, reduce stability, and increase the chance of materials being blown off, all of which significantly raise risk.

Why Does New York City have so many scaffolds?

New York City is covered in scaffolds mostly because of its facade-safety building code, known as Local Law 11 or the Façade Inspection & Safety Program (FISP). The law requires buildings taller than six stories to have their exterior walls inspected every five years; when inspectors find hazardous or deteriorated facades, owners must put up sidewalk sheds to protect pedestrians and keep them in place until repairs are done, which can take years because of cost and permitting delays. This safety requirement, combined with aging buildings, is what drives the city’s “forest” of long-lasting scaffolds.