Working at height in Portugal: from what height are guard-rails, a harness or a platform mandatory, and what the law says (2026)

In short: Portuguese law does not set a height above which work becomes "work at height". The "2 metres" everyone quotes comes from Spain, Brazil and a Portuguese draft regulation that never came into force. What the law requires is different: at any height where there is a risk of falling, the employer must assess the risk and give priority to collective protection (guard-rails, platforms, scaffolding, nets) over personal protection (harness), and may only use ladders for short, low-risk tasks (Decree-Law 50/2005, article 36). The numbers that do exist concern equipment: scaffolding mandatory above 4 m in construction, guard-rails at 0.90 m on scaffolds and 1 m at openings, 1.10 m on aerial platform baskets, handrails on walkways from 2 m. The harness is the last line, mandatory on boom lifts and when collective protection is impossible, and it needs an anchor, fall clearance and a rescue plan.

The 2-metre question

"Work at height is anything above 2 metres" is the most repeated line in training courses and quotes. It is in no Portuguese law in force. It is worth knowing where it comes from, because the confusion leads to two mistakes: treating the 1.80 m of a stepladder as if there were no risk, and thinking that above 2 m a harness is enough.

The correct answer to "from what height" is therefore: from the height at which a fall can hurt someone, which the risk assessment must consider case by case. A worker who falls 1.5 m from a stepladder onto a steel rebar has a serious accident; one working at 8 m inside a platform basket with 1.10 m guard-rails is protected.

What Portuguese law requires

The right order: avoid, protect everyone, protect each one

Decree-Law 50/2005 and Law 102/2009 impose a hierarchy. It is not a recommendation: skipping a step without justification is what the labour inspectorate looks for after an accident.

1. Avoid working at height. Assemble on the ground and lift afterwards; use pole tools; bring the work to you. It is the first question of any risk assessment (article 36, paragraph 1).
2. Work from an existing safe surface: a floor with guard-rails, a roof with edge protection, a fixed platform.
3. Use collective protection: scaffolding, aerial work platform, mobile tower, temporary guard-rails, safety nets. It protects everyone at once and does not depend on anyone remembering to clip on (article 36, paragraph 2). A rented aerial platform for a day costs €50 to €250 and is, for most one-off jobs, the cheapest way to meet this step.
4. Only then, personal protection: a harness with a fall-arrest or restraint system, anchored to a strong point, when collective protection is technically impossible or during erection (Ordinance 101/96, article 11, paragraph 2).
5. Ladders only for what is left: short, low-risk tasks where safer equipment is not justified (article 36, paragraph 7). They are not a workplace; they are an access.

By the letter of the law, the choice between scaffold, platform or ladder is made on three criteria: the frequency of climbing, the height to reach and the duration of the work (article 36, paragraph 4). And never in bad weather: wind, rain or ice that compromise safety stop the work (paragraph 8).

Guard-rails: the dimensions the law sets

Here there are numbers. In Portugal the 1958 regulation, with its measurements, coexists with the European equipment standards, which are stricter and which any CE-marked scaffold or platform already meets.

In practice, always install at 1 m with a toe-board, which meets both references; the 0.90 m of 1958 is the legal minimum, not good practice.

Harness: when it is mandatory and what must come with it

A harness is not an alternative to a guard-rail; it is what you use when a guard-rail is not possible. The law requires it in three situations: when collective protection is technically unfeasible (Ordinance 101/96, article 11), on roofs where neither guard-rails nor platforms can be fitted (Decree 41821, article 44) and in rope access work (Decree-Law 50/2005, article 39). Outside the law, but mandatory in practice, is the basket of boom lifts (see below). A harness alone protects nobody; the full system has five parts:

• Full-body harness (EN 361), with a dorsal or sternal attachment point. A work-positioning belt (EN 358) is for working supported, not for stopping a fall.
• Connection: a lanyard with energy absorber (EN 355, at most 2 m, limits the force to 6 kN), a retractable block (EN 360) or a guided fall arrester on cable or rope (EN 353). In restraint, the lanyard is deliberately short so the worker cannot even reach the edge.
• Anchor (EN 795): a fixed point that takes 12 kN, or a horizontal lifeline (class C). Clipping to the scaffold or guard-rail only if the manufacturer allows it.
• Fall clearance. With a 2 m lanyard and absorber anchored at foot level, about 6 m of clear space below the anchor is needed (2 m of lanyard, up to 1.6 m of absorber extension, 1.5 m from harness to feet, 1 m margin). Below that, the worker hits the ground before the system acts; the answer is to anchor overhead or use a retractable.
• Rescue plan. Someone left hanging in a harness loses consciousness in minutes and can die in under half an hour (suspension trauma). The law requires that access allows evacuation (article 36, paragraph 5) and that the worker "can be rescued immediately" (article 39). That means having someone on site who knows how to lower them, and the means to do it.

Equipment must be checked before every use and inspected by a competent person at least once a year (EN 365), with a record. A harness that has arrested a fall goes in the bin.

Aerial work platforms: collective protection on wheels

An aerial work platform is the simplest way to meet the priority of collective protection: the basket has 1.10 m guard-rails and a toe-board, the machine levels itself and the controls are with the worker. That is why for jobs of hours or days the inspectorate accepts a platform where it would not accept a ladder. Three rules:

• On boom lifts (articulating, telescopic, truck-mounted, spider lifts), IPAF and the manufacturers require a full-body harness with a short restraint lanyard clipped to the basket's anchor point. A jolt of the boom can catapult the worker over the guard-rail (whiplash effect); the short lanyard keeps them in. JLG manuals say so for every model. JLG and rental companies supply the anchor point; the harness and lanyard are yours.
• On scissor lifts and vertical masts, IPAF considers that a harness is "not normally required", because there is no catapult effect; the employer's risk assessment or the project owner may still require it. Never work with a foot on the guard-rail or leave the basket at height.
• The operator must be qualified (Decree-Law 50/2005, article 32). A platform operator course costs €120 to €170 and takes 8 to 12 hours; the IPAF card is valid for 5 years. See the guide Forklift and aerial platform licence.

To choose between scissor, articulating, telescopic or spider, see Types of aerial work platforms; for prices, How much it costs to rent an aerial work platform.

Scaffolding: mandatory above 4 metres in construction

The 1958 regulation is clear: "the use of scaffolding is mandatory on construction works where workers have to work more than 4 m above the ground or above any continuous surface offering the necessary safety conditions" (Decree 41821, article 1). Today the aerial platform is accepted as equivalent, because it provides a working surface with guard-rails; what is not accepted above 4 m is the ladder. For scaffolding, Decree-Law 50/2005 adds:

• Erection, alteration and dismantling under the direction of a competent person with specific training, by trained workers (article 40, paragraph 1).
• Erection, use and dismantling plan when complexity requires it, and calculation note from the manufacturer or own calculation, except for recognised standard configurations (article 40, paragraphs 2 and 3).
• Inspection before use, periodically and after any alteration or bad weather, by a competent person, with the report kept (articles 6 and 7).
• Complete platforms, with no unprotected zone between the boards and the guard-rails, and unfinished parts signed and fenced off (article 42).

The types of scaffolding, the permit to erect them on the street and the public-space occupation fee have their own guides. Scaffolding rental and erection companies are in our directory.

Ladders: only for short, low-risk tasks

The ladder is the equipment with the most accidents and the one the law restricts most. Article 36, paragraph 7, of Decree-Law 50/2005 only allows working from a ladder "in cases where the use of safer equipment is not justified because of the low level of risk, the short duration of use or existing features the employer cannot alter". The practical reference used across Europe, from the British authority, is up to 30 minutes per task and up to 10 kg of load, with three points of contact. When a ladder really is needed:

• Feet on a stable and strong support, rungs horizontal, and prevented from slipping: tied at the top or base, anti-slip feet or someone holding it (article 38, paragraphs 2 and 3).
• 75° angle, the 1-in-4 rule: one metre out for every four metres up.
• As access, extend at least 90 cm above the landing (article 38, paragraph 4); flights of at most 6 m with a landing (Decree 41821, article 74).
• Always keep a secure foothold and handhold, even when carrying something (article 38, paragraph 8). If you need both hands, it is not a ladder job.
• Ladders conforming to EN 131, inspected, with no broken rungs or worn feet.

Roofs

Roofs combine the three worst factors: an open edge, a sloping surface and fragile materials. The 1958 regulation requires guard-rails, platforms or roof ladders and, only if none of these is practicable, an anchored safety belt (article 44); on weak and glazed roofs, measures so that nobody leans on fragile points (article 45). In today's language: EN 13374 edge protection at the eaves or, for short jobs, an aerial work platform that takes the worker to the roof without stepping on it; on asbestos-cement sheets, polycarbonate panels and skylights, load-spreading boards, nets underneath or a harness on a lifeline. Solar panels on house roofs are now the source of many falls: the same law applies to the two-person installer and the large contract.

Which solution for which job

Training: mandatory, with no official licence

There is no "work at height licence". The law requires the employer to provide training suited to the job and to high-risk activities (Law 102/2009, article 20) and to let only people with aptitude and training into high-risk zones (article 15, paragraph 5); scaffold erectors need specific training (Decree-Law 50/2005, article 40) and platform operators must be qualified (article 32). In practice:

• Work-at-height safety course, 8 hours (4 theory, 4 practice), at DGERT-certified providers with a SIGO certificate: €55 to €90 at trade associations, €60 to €135 at private providers, €135 plus VAT for a one-day online course. The syllabus covers fall factor, impact force, clearance, anchors, lifelines, PPE inspection and suspension trauma.
• Aerial platform operator: €120 to €170, 8 to 12 hours, or an IPAF course with a 5-year card (guide).
• Scaffold erection: erector courses, usually 16 to 35 hours, for the crews that erect.
• Training on the machine and on site: generic training does not replace the instructions for the specific equipment and site, given by the employer and recorded.

How many accidents: Portugal's numbers

Falls from height are, year after year, the main cause of death in Portuguese construction. The official data from insurer reports (GEP, via Pordata):

In 2024 construction, with under 7% of employment, had a third of fatal accidents, and almost two thirds of deaths occurred in companies with fewer than 50 workers. ACT treats falls from height as its priority inspection topic in construction, with specific campaigns and a dedicated leaflet.

What non-compliance costs

Checklist before going up

1. Can you avoid going up? Assemble on the ground, telescopic pole, bring the part down.
2. Assess and write it down: height, duration, frequency, floor, wind, what is below (rebar, water, traffic), how many people.
3. Choose collective protection: aerial platform, scaffold, tower, temporary guard-rails, nets. Check guard-rails at 1 m with toe-board and, on baskets, 1.10 m.
4. If you need a harness: certified anchor, enough clearance, short restraint lanyard on boom lifts, equipment inspected within the last year, rescue plan and means on site.
5. Ladder only if the task is short, light and low-risk, and even then at 1 in 4, 90 cm above the landing and three points of contact.
6. Trained people: qualified operator on platforms, trained erectors on scaffolds, work-at-height course for anyone using a harness.
7. Checked equipment: platform with periodic inspection up to date, scaffold inspected and recorded, PPE inspected.
8. Stop in bad weather and protect what is below: cordon off the drop zone.

Where Trapézio de Prismas comes in

We are the JLG representative in Portugal and sell new and used aerial work platforms, the most direct way to work at height with collective protection. We carry out the mandatory periodic inspections of platforms and lifting equipment and provide the JLG manuals, with each model's anchor points and harness rules. For a one-off job, find who rents in the directory of platform rental companies by district.