Ladders and working at height

A ladder is the most ordinary tool in a house, and it puts a great many people in hospital. In the United States, one study counted about 136,000 people a year treated in emergency departments for ladder injuries between 1990 and 2005, from the consumer-product side of the national system, and where the place was recorded, 97.3% were hurt "in non-occupational settings, such as homes and farms".⁷ NIOSH counts work injuries separately and says the consumer-product estimates "exclude work-related injuries", so that isn't the share of all ladder injuries that happen at work.⁸ It's still a great many people hurt on ladders off the job. The rules for using a ladder safely were written almost entirely for workplaces, by regulators who don't regulate your garden. This lesson takes those rules, says whom each was written for, and shows you how to use them at home: whether to use a ladder at all, how to set a leaning ladder up by the numbers, how to stop it moving, and what to check before you climb. Stepladders, and what the injury figures do and don't count, are lesson 16's.

Nothing in this lesson has you climb anything. The one hands-on exercise sets a ladder up on the ground and measures it. Parts of the lesson describe British and American workplace law, and one caution goes with them. This is general information, not legal advice. The rules differ between England, Wales, Scotland and Northern Ireland, and between US states and cities, and they change.

Who the ladder rules bind

This is general information, not legal advice.

In Great Britain, the law on ladders at work is the Work at Height Regulations 2005. Regulation 3 says who they bind. The requirements on an employer apply "in relation to work" by the employer's employees or by anyone else under the employer's control, and regulation 3(3) extends them to certain self-employed people, for their own work and work under their control, and to other persons in relation to work by people under their control.³ There's no duty in it on a householder doing their own job at home. Whether it reaches a householder who hires and directs someone else's work is a question this course didn't settle, so the lesson says nothing about it.

The detailed practice comes from the Health and Safety Executive (HSE), Great Britain's workplace safety regulator, in a web guide, and from a short guide the Ladder Association wrote with HSE, called LA455. LA455 says who it's for in its introduction: "This guidance is for employers on the simple, sensible precautions they should take to keep people safe when using portable leaning ladders and stepladders in the workplace."²

In the US, the rule this lesson reads is the federal Occupational Safety and Health Administration's (OSHA's) ladder standard for construction, 29 CFR 1926.1053. It applies to ladders used in construction workplaces, including painting and decorating, and its duties fall on employers.⁴ OSHA also publishes a two-sided "QuickCard" on portable ladders, which is advice for workplaces, not regulation.⁵

So the law allows a householder more than the advice does. In law, neither country's ladder rules bind you on your own house. In advice, HSE's guidance and OSHA's are still the most carefully specified ladder practice this course read, and the one British source this course read that speaks to householders, the Royal Society for the Prevention of Accidents (RoSPA), a charity, gives, on its garden safety page, the same core numbers for use at home: a "1:4 ratio/ 75 degree angle", three points of contact, no overreaching.⁶ This course follows the advice. Using a ladder for a short, low-risk job at home is Yours, on conditions, and the conditions are the rest of this lesson.

You'll have seen the pattern before. Lesson 10, "Gas: the law and the engineer", met it with gas work, where the registration duty binds businesses and the label still follows the advice. Here it goes one step further: gas law still binds you through the competence duty, but the ladder rules don't bind you at home at all, and the advice is what keeps you on the ladder.

Whether to use a ladder at all

HSE's guide opens with this sentence: "Ladders and stepladders are not banned under health and safety law." It goes on that they "can be a sensible and practical option for low-risk, short-duration tasks, although they should not automatically be your first choice."¹

Notice the order in that phrase: low risk first. HSE says it again, more sharply: "Short duration is not the deciding factor in establishing whether use of a ladder is acceptable", and "you must have first considered risk."¹ Then it gives a working guide for time: "As a guide, if your task would require staying up a leaning ladder or stepladder for more than 30 minutes at a time, it is recommended you use alternative equipment."¹ And a condition for place: use ladders only where they can be used safely, "eg where the ladder will be level and stable, and can be secured (where it is reasonably practicable to do so)."¹

What counts as "at height" is wide. HSE's answer is "work in any place where, if precautions were not taken, a person could fall a distance liable to cause personal injury", and it counts "the treads of a stepladder" as a working platform.¹⁰ A kitchen stepladder is working at height in HSE's sense.

American advice points the same way from a different starting place. The National Institute for Occupational Safety and Health (NIOSH) ends the discussion in its study of ladder falls at work with steps it says employers should consider, first to "plan the work to reduce or eliminate the need for using ladders", finishing "as much of the work as possible on the ground", and then to provide "alternative, safer equipment for extended work at elevation", naming aerial lifts, supported scaffolds and mast climbing platforms.⁸ That's advice to employers, and the equipment it names is not household kit, but the first step carries straight over. Can the job be done from the ground at all? Is there another route to it, from inside through a window, say? Is it the kind of job for someone with the equipment?

This course read no official list of the alternatives for a home. HSE's work at height pages describe mobile towers, and say you need to be competent to build, inspect, use and dismantle one.¹⁰ So when a job fails the ladder test, the course's answer is plain: a tradesperson with the right equipment is Call someone, and lesson 23, "Hiring a tradesperson, and when to stop", is how you choose one.

The numbers, in each country's terms

This is general information, not legal advice.

Both countries' workplace rules and guidance give numbers for the same handful of things. They're given here as each body gives them, not merged.

The angle

HSE's version: "you should use the 1-in-4 rule. This is where the ladder should be one space or unit of measurement out for every four spaces or units up (a 75° angle)".¹ OSHA's rule for employers is measured along the ladder instead of up the wall. A ladder that is not self-supporting "shall be used at an angle such that the horizontal distance from the top support to the foot of the ladder is approximately one-quarter of the working length of the ladder (the distance along the ladder between the foot and the top support)."⁴ The QuickCard says the same in plainer words: place the base "a quarter of the working length of the ladder from the wall".⁵

Those are two slightly different rules, and you can check how different with a calculator. Four up and one out makes an angle whose tangent is 4, which is about 76°; HSE calls it a 75° angle. A foot set a quarter of the ladder's length out makes an angle whose cosine is a quarter, which is about 75.5°. That is this course's arithmetic, and the two land within half a degree of each other. OSHA's own load test for leaning ladders sets them at 75½ degrees from the horizontal, which fits.⁴ HSE calls it "the safest position to work from", and neither body explains in the pages read why that angle and not another, so this lesson does not either.

A schematic drawn from HSE's web guide and LA455 (Great Britain) and OSHA's 29 CFR 1926.1053(b)(1) and (b)(5)(i) (US), all read in 2026. The oxblood line at the foot marks the distance out; the oxblood labels at the top mark how far the ladder carries on above a landing you step off at, with a bracket from the landing to the ladder's top. The angle marked is at the foot, on the wall side. The two angles are this course's arithmetic from each rule.¹²⁴

Setting the angle is Yours: nothing in it needs anything but a tape and the ground to be right.

Above the landing, and at the top

If you climb a ladder to step off it onto something (a loft or attic floor, a platform), HSE's guidance and OSHA's rule both want it to carry on above that point, so you have something to hold as you step off and on. HSE: ladders used to reach another level should be tied and "extend at least 1 m above the landing point to provide a secure handhold".¹ OSHA: the side rails "shall extend at least 3 feet (.9 m) above the upper landing surface", and where the ladder is too short for that, it has to be secured at the top with a grab rail provided.⁴

For working from the ladder rather than stepping off it, HSE says: "Don’t work off the top three rungs. Try to make sure that the ladder extends at least 1 metre or three rungs above where you are working".¹ The QuickCard gives the same three-rung limit: "Do not stand on the three top rungs of a straight, single or extension ladder."⁵ If a job can only be reached from the top rungs, the ladder is too short for it, and the answer is a longer ladder or a different way of doing the job.

Three points of contact, and your belt buckle

HSE: "Maintain three points of contact when climbing and wherever possible at the work position."¹ The QuickCard spells out what three points are: "two hands and a foot, or two feet and a hand".⁵ On a leaning ladder, where you can't keep a handhold except for a brief moment (HSE's examples are holding a nail to start it, or starting a screw), HSE says you "will need to take other measures to prevent a fall or mitigate the consequences if one happened".¹ Stepladders have their own version, which lesson 16 gives.

Here's a small case of the law allowing more than the advice inside one country. OSHA's rule, which binds employers, asks less of their employees: "Each employee shall use at least one hand to grasp the ladder when progressing up and/or down the ladder."⁴ Its own QuickCard advises three points.⁵ Follow the card.

A hand full of tools is a hand that is not holding the ladder. HSE says "Avoid holding items when climbing (consider using a tool belt)" and to carry only light materials and tools; OSHA's rule for employers says an employee "shall not carry any object or load that could cause the employee to lose balance and fall."¹⁴

Then overreaching. HSE's test is one you can feel without looking: "make sure your belt buckle (or navel) stays within the stiles".¹ The stiles are the two long side rails. If reaching the next bit of the job would take your middle outside them, you climb down and move the ladder.

Overhead power lines

HSE: "Don’t work within 6 m horizontally of any overhead power line, unless it has been made dead or it is protected with insulation."¹ Six metres is about 20 feet, this course's conversion. HSE adds that a non-conductive ladder (it gives fibreglass or timber) is for "any electrical work", which this course does not teach.¹ The QuickCard's first electrical line is "Look for overhead power lines before handling a ladder", and it says to avoid a metal ladder near power lines.⁵ Look up before you carry a long ladder out, not after you've swung it upright.

The American electrocution figures include ladders. The US Consumer Product Safety Commission (CPSC) counted 22 electrocutions reported to it under "Ladder" from 2011 to 2020, out of its consumer-product electrocution reports for those years.⁹ Its report counts a consumer product that comes into contact with an electrical source, "such as power lines or household current", and leaves out work-related deaths; it says a death associated with a product was "not necessarily caused by the product".⁹ Its table does not break the 22 down by what the ladder touched.

On this course's reading, making a line dead or insulating it is not something a householder can do to someone else's cable, so a job within 6 m of an overhead line is Call someone, and the first call is to whoever owns or runs the line, to ask whether it can be made dead or protected for the job. This course read nothing from an electricity network or utility on how that is arranged.

A gap for you: working out the foot

The easier check at the foot of a ladder is usually HSE's way round, because the height is easier to see than the working length: estimate how high up the wall the ladder rests, divide by four, and that's the distance out.

Securing the ladder, in HSE's order

A ladder set at the right angle can still slip, and securing it is HSE's answer: its guide gives tying "to prevent it from slipping either outwards or sideways". HSE lists the ways of securing a ladder in order of preference:¹

1. "Tie the ladder to a suitable point, making sure both stiles are tied"
2. "Where this is not practical, secure the ladder with an effective ladder stability device"
3. "If this is not possible, securely wedge the ladder (eg wedge the stiles against a wall)"
4. "If you cannot achieve any of these options, foot the ladder. Footing is the last resort"

Footing means having someone at the foot of the ladder to stop it moving; the pages read don't describe how it's done. HSE puts it last, and gives no reason in the pages read, so this lesson supplies none.

Where the ladder rests matters too. HSE wants "a strong upper resting point", and says "do not rest it against weak upper surfaces such as glazing or plastic gutters".¹ LA455 shows one answer in a picture: its Figure 4 has a stand-off device fitted at the top of the ladder, bearing on the wall below the gutter, captioned as the "use of a stand-off device to ensure a strong resting point", with the instruction to follow the maker's instructions.² At the bottom, HSE says not to stand a ladder on movable objects, and to level it with "proprietary levelling devices, not ad-hoc packing such as bricks, blocks, timbers etc".¹ So a brick under a short leg on sloping ground is exactly what not to do.

Where a second person fits

RoSPA's home-safety advice adds something HSE's workplace list does not stress: "Consider having another person present, especially when using leaning ladders."⁶ RoSPA's case study of a man who fell from a ladder cutting his hedge, with a punctured lung and nine broken ribs, has him say afterwards: "It should have been a two-person job with somebody holding the ladder."⁶

Put those beside HSE's order and they differ in emphasis, not in fact. RoSPA's advice doesn't say what the second person is for; the man in its case study means someone holding the ladder, which is footing. HSE doesn't strike footing off its list. It ranks it last, after tying, a stability device and wedging, as the thing to do when none of those can be done. OSHA's rule for employers, for its part, names "holding" alongside "placing" and "lashing" as ways of taking care with a ladder on a slippery surface.⁴ So this course teaches HSE's order for securing a ladder, and RoSPA's point that it's worth not being alone with one; that a second person nearby is useful if something goes wrong, whatever is holding the ladder, is this course's reading. What the course doesn't do is treat someone at the bottom as what makes a ladder safe.

Before you climb: the check

The pre-use check is the one piece of ladder inspection that is truly yours. HSE's list covers the stiles ("not bent or damaged, as the ladder could buckle or collapse"), the feet ("if they are missing, worn or damaged the ladder could slip"), the rungs ("if they are bent, worn, missing or loose, the ladder could fail"), any locking mechanism, a stepladder's platform, and its steps or treads, which could be slippery if contaminated or collapse if their fixings are loose.¹

Two details in HSE's list are easy to miss. First, check the feet again "when moving from soft/dirty ground (eg dug soil, loose sand/stone, a dirty workshop) to a smooth, solid surface (eg paving slabs)", so that the feet themselves, not the mud on them, are touching the ground.¹ A ladder carried from the lawn to the patio has changed ground. Second, telescopic ladders: check that the mechanism locking each section works before every use, follow the maker's opening and closing instructions, and "Be aware of the potential for trapping fingers between the closing sections."¹ HSE adds that some of the important parts are inside where they can't be seen, and "If you are in any doubt, do not use them."¹

Beyond the pre-use check, HSE's guidance and LA455 describe "detailed visual inspections" at fixed intervals, recorded, as "the responsibility of the employer".¹² That is a workplace duty with no household equivalent in the sources read. OSHA's rule is similar: ladders inspected by a competent person "on a periodic basis and after any occurrence that could affect their safe use", and a defective portable ladder tagged "Do Not Use" or marked and taken out of service until repaired.⁴ The QuickCard, OSHA's advice for workers, puts it in one line: "Always inspect the ladder prior to using it."⁵

What happens when the check finds something? HSE's guide says "do not use the ladder and tell the person in charge of the work."¹ At home, the person in charge is you. This course reads that as: a ladder with a bent stile, a missing foot or a lock that won't engage is not used, and is not patched. The sources read give no repair method for a householder, and OSHA's rule says a repaired ladder has to be restored to "its original design criteria", which on this course's reading is not a kitchen-table job.⁴ Doing the check is Yours; mending the ladder is not something this course teaches.

An upstairs window frame, a plastic gutter and a cable

This is general information, not legal advice.

A man in a two-storey house on the Gulf Coast wants to paint the frame of an upstairs window (the second floor, in American terms) from a leaning extension ladder. The only place to rest the ladder near the window is the plastic gutter above it. A service cable runs from the street to the eaves on the same side of the house, about 2 metres (6 or 7 feet) to one side of the window.

The gutter first. HSE says not to rest a ladder against plastic gutters, and LA455 shows a stand-off device as one way to rest a ladder against the wall instead.¹² So on HSE's guidance, the ladder does not go on the gutter at all. This course read no US source on ladders and gutters, so the British guidance is the one it has. The stand-off is a piece of equipment he'd have to get and fit by its maker's instructions.

Then the cable. HSE's rule is not to work within 6 m horizontally of any overhead power line unless it has been made dead or protected with insulation.¹ The rule says any overhead power line. HSE doesn't say whether the covering on a cable like this counts as "protected with insulation", and this course read nothing that does, so the course treats it as a line until its owner says otherwise. Two metres is well inside six. And the QuickCard's first electrical instruction is to look for overhead lines before handling a ladder, which he has done.⁵

Notice whose advice that is. The American card says look for lines and keep a metal ladder away from them, but gives no distance. The one US federal rule on overhead lines this course read, 29 CFR 1910.333(c)(3), is part of OSHA's electrical rules for employers in general industry; construction work has rules of its own, which this course didn't read. It keeps an unqualified worker, and the longest conductive object they may touch, at least "10 ft. (305 cm)" from an unguarded, energized overhead line of 50 kV or below, and it says that where lines are to be de-energized, arrangements are made "with the person or organization that operates or controls the electric circuits involved".¹¹ So there are two distances, each written for workplaces: HSE's 6 m, British guidance, and OSHA's 10 feet (about 3 m), an American rule. Neither binds him at home, neither page gives a reason for its figure, and two metres is inside both.

What people get wrong

"Ladders are banned now." They aren't: "Ladders and stepladders are not banned under health and safety law."¹ HSE says they can suit low-risk, short-duration tasks.

"It's only a quick job." HSE: "Short duration is not the deciding factor", and risk comes first.¹

"Someone holding the bottom makes it safe." On HSE's order, footing is the last resort, after tying, a stability device and wedging.¹ RoSPA still says to consider having another person present.⁶

"If it's the right angle, it won't slip." HSE still wants it secured, tied first, and resting on something strong: not glazing, not a plastic gutter.¹

"Those rules are for builders, so they don't apply to me." They don't bind you, and that's the law half. The advice half is that they're still the best-specified practice this course read (see "Who the ladder rules bind", which carries the general-information note).

Practice

For your plan

This lesson adds to the calendar: a pre-use check every time the ladder comes out, and a look at the ladder's feet whenever it moves from soft ground to hard (HSE). It adds to the map: where a ladder can stand safely at each side of the house, where any overhead lines run, and which walls have a strong resting point rather than a plastic gutter or glass. It adds to the stop list: any job within 6 m of an overhead line, any job that needs the top three rungs or steps, any job that would keep you up a ladder for more than 30 minutes at a time, and any ladder that fails its check.

Connections

Lessons 13 and 14, "Tools, dust and fumes: a small kit used safely" and "Before you drill: cables, pipes and what's in the wall", came before this one, and a ladder is where their drill and tools often end up. Lesson 10, "Gas: the law and the engineer", met the law allowing more than the advice; this lesson met the same shape with ladders, and lesson 19, "Asbestos, lead paint and radon: what not to disturb", meets it again. Next, lesson 16, "Stepladders, and what the ladder injury figures count", takes the other kind of ladder and the evidence on who gets hurt. Lesson 17, "Keeping water out: roof, gutters, ground and walls", is mostly checks made from the ground; clearing a gutter is the one job there that goes by this lesson's rules.

Go deeper

• HSE, "Safe use of ladders and stepladders", free, eight short web pages. Read here, pages 1 to 7. Written for workplaces in Great Britain, and the most carefully specified ladder practice this course read.
• The Ladder Association and HSE, LA455 Safe Use of Ladders and Stepladders: A brief guide, free. Read here in full. Twelve pages, the same rules as HSE's web guide with the pictures that make them clear, including the stand-off device and a tied ladder.
• OSHA, "Portable Ladder Safety" QuickCard, free. Read here in full. Two sides, the American numbers in plain words, including three points of contact.

Sources

1. Health and Safety Executive, "Safe use of ladders and stepladders", web guide. Read: pages 1 to 6 in full, re-read on the live pages 25 September 2026, and page 7 ("Inspecting the condition of ladders") read in full the same day. Page 8 (product standards) not read. Guidance for workplaces in Great Britain.
2. The Ladder Association and HSE, LA455 Safe Use of Ladders and Stepladders: A brief guide, Version 1, Rev 1, 09/26. Read: the landing page and the whole PDF, 25 September 2026. Written for employers.
3. The Work at Height Regulations 2005 (SI 2005/735), regulation 3, revised text. Read: regulation 3 in full on legislation.gov.uk, re-read 25 September 2026. Extends to Great Britain.
4. US Occupational Safety and Health Administration, 29 CFR 1926.1053, "Ladders", eCFR. Read: the whole section, paragraphs (a) and (b), 25 September 2026. A federal rule for employers in construction.
5. OSHA, "Portable Ladder Safety" QuickCard, OSHA 3246. Read: full two-sided card, re-read 25 September 2026 and again 26 September 2026. Advice for workplaces.
6. RoSPA, "Garden safety" and "Neil" (case study, dated 12 September 2019). Read: full text of both, re-read 25 September 2026. A UK accident-prevention charity.
7. A. L. D'Souza, G. A. Smith and L. B. Trifiletti, "Ladder-related injuries treated in emergency departments in the United States, 1990-2005", American Journal of Preventive Medicine, 2007. Read: abstract only (PubMed).
8. C. M. Socias and colleagues (NIOSH), "Occupational Ladder Fall Injuries: United States, 2011", MMWR 63(16), 2014, read from Internet Archive capture 20260907020506 (cdc.gov refuses automated readers). Read: full text. An erratum exists and was not read.
9. US Consumer Product Safety Commission, Electrocutions Associated With Consumer Products: 2011-2020, November 2023. Read: executive summary and Table 5, and the scope rules, 25 September 2026.
10. Health and Safety Executive, "Work at height: Frequently asked questions". Read: full text, 25 September 2026. Guidance for workplaces in Great Britain.
11. US Occupational Safety and Health Administration, 29 CFR 1910.333, "Selection and use of work practices", eCFR. Read: paragraph (c)(3), "Overhead lines", in full, 26 September 2026. A federal rule for employers in general industry.