Working hours exemption in Portugal: rules and pay

Were you offered a working hours exemption in Portugal, or do you already work under one, and nobody explained the rules? There are three: the agreement must be written, it comes in three different types, and it always pays a supplement of at least the value of 1 overtime hour per day (Article 265 of the Labour Code). Not paying it is a serious administrative offence.

What the exemption is (and what it is not)

Marta manages a team at a software company on 1,400 euros base pay. Her contract has an exemption clause of the broad type: she is not tied to fixed start and end times, organises her day as the work demands, and receives a monthly supplement for it. This is the working hours exemption, known in Portuguese as "isenção de horário de trabalho" (IHT): a regime that frees the worker from schedule limits in exchange for payment (Articles 218, 219 and 265 of the Labour Code).

What the exemption is not: it is not unpaid endless availability, it is not being reachable around the clock, and it is not something the employer can impose. It is born from a written agreement. Without a signed document there is no exemption, and the normal work schedule rules apply.

Who can be exempt: the three cases of Article 218

The law closes the door on blanket exemptions. A worker can only be exempt, by written agreement, in one of these situations (Article 218(1)):

• Management or director roles, or positions of trust, supervision or support to the holders of those roles. That is Marta, who runs a team and reports directly to the board.
• Preparatory or complementary work that by its nature can only be done outside the limits of the schedule: the technician who starts the machines before the factory opens and shuts them down after closing.
• Telework and other cases of regular work away from the premises, without direct supervision by a superior: Hugo, a sales rep who spends his days on the road visiting clients. Working from home? See your remote work rights.

The sector's collective agreement can add other situations (Article 218(2)). Outside these cases, an exemption clause has no legal footing, so always check which of the three covers you.

One piece of history that still causes confusion: until 2012, the exemption agreement had to be sent to ACT, the labour inspection authority (former Article 218(3)). Law 23/2012 revoked that duty. Today there is nothing to file; the written agreement, kept by both parties, is enough.

The three types under Article 219, and the silence trap

The agreement can set one of three types (Article 219(1)):

1. Broad type: no subjection to the maximum limits of the normal working period. This is Marta's regime: the day stretches as the work demands.
2. Set increase: the agreement fixes how many extra hours you can work, per day or per week. Vera, a warehouse manager, signed an exemption with an increase of up to 6 hours per week: she works up to 46 hours without those being overtime.
3. Normal period kept: you keep your weekly hours and only drop out of the fixed entry and exit grid. You gain flexibility, not hours.

The trap: if the agreement does not choose a type, the broad one applies (Article 219(2)). Signing "working hours exemption" with nothing else is signing the most demanding version. Read the document before signing and insist that the type is written down.

Under every type, some things stay out of reach (Article 219(3)): the weekly rest day (mandatory or complementary), public holidays and daily rest. Breaching any of them is a serious administrative offence (Article 219(4)).

One narrow exception: for exempt workers holding management or director roles (or with autonomous decision power), the rule of 11 consecutive hours of rest between working days does not apply, and even then the law requires a rest period that allows recovery (Article 214(2) and (3)). The same group can go past 6 consecutive working hours without a break (Article 213(5)). For everyone outside that narrow group, rest rights apply in full.

How much you receive: the minimum under Article 265

The exemption is paid through a specific supplement, set by collective agreement or, failing that, with these minimums (Article 265(1)):

• Broad type and set increase type: the value of 1 overtime hour per day;
• Type that keeps the normal working period: the value of 2 overtime hours per week.

Marta's numbers, on 1,400 euros base pay and 40 hours per week:

• Normal hour: (1,400 x 12) : (52 x 40) = 8.08 euros (the formula of Article 271)
• Overtime hour on a working day: 8.08 + 25% = 10.10 euros (Article 268(1))
• Minimum supplement: 10.10 x 22 working days = about 222 euros per month

And Hugo's, on 1,100 euros under the type that keeps the normal period: an hourly rate of 6.35 euros, an overtime hour of 7.93 euros, 2 per week, which comes to about 69 euros per month.

[Common interpretation: the law does not say which of the rates of Article 268 applies, nor whether "per day" includes non-working days. The dominant reading uses the first hour weekday rate (25%) and counts actual working days.]

Three notes worth money:

• The collective agreement can set a higher amount. Many sector agreements fix the supplement as a percentage of base pay (20% to 25% are common). Check yours.
• Only board members and directors can waive the supplement (Article 265(2)). Nuno, a finance director, can sign a waiver; Vera, a warehouse manager, cannot, and a waiver signed by her is worthless.
• Not paying is a serious administrative offence (Article 265(3)), and wage credits can be claimed during the contract and up to one year after it ends (Article 337).

The supplement counts towards the holiday allowance, because it pays for the specific way the work is performed (Article 264(2)). As a rule it stays out of the Christmas allowance, whose basis is base pay plus seniority payments (Articles 262 and 263), unless agreed otherwise. It also stays out of the severance pay basis, which only counts base pay and seniority payments: check the severance calculator.

Does an exempt worker still earn overtime? Yes, in these cases

The idea that "exempt means no overtime" is a half truth. Article 226 settles it:

• Broad type, normal working day: extra hours do not count as overtime (Article 226(3)). That is exactly what the Article 265 supplement pays for.
• Weekly rest day or public holiday: the work is overtime even for exempt workers; the exclusion only covers normal working days. The premiums and compensatory rest of overtime pay apply.
• Capped types: if the agreement fixed a daily or weekly period, like Vera's 46 hours, everything beyond it is overtime (Article 226(2)), paid with the premiums of Article 268.

To prove any of those hours you need records. And here is a right many companies forget: working time records are mandatory for exempt workers too (Article 202(1)); see how working time records work. An exempt worker with no records is still an administrative offence.

The exemption does not cancel digital rest either: outside your working period, the employer has a duty not to contact you, except in cases of force majeure (Article 199-A). Flexibility is not permanent availability.

Six situations and what the law says

How to react if the company does not comply

1. Get the agreement. Check the written type: without an express choice, the broad one applies (Article 219(2)). Without a written agreement, there is no exemption at all.
2. Do the maths. Work out your hourly rate with the Article 271 formula, add 25% and multiply by the working days of the month. Compare with your payslip.
3. Ask in writing. A simple email requesting the missing supplement creates evidence. Wage credits survive up to one year after the contract ends (Article 337).
4. Complain to ACT. An unpaid supplement, breached rest rights or missing records are serious administrative offences; see how to file a complaint with ACT.

For companies: using the exemption without risk

If you run a team, the working hours exemption is a useful tool, as long as it is set up with rigour. Put the agreement in writing before the first day under the regime and confirm the worker fits one of the situations of Article 218; outside them, the clause gives you no cover. Choose the type expressly, because silence throws the agreement into the broad type, which is also the most expensive in risk. Budget the supplement from day one (the minimums of Article 265, or the amount in the applicable collective agreement) and remember it counts towards the holiday allowance. Accept waivers only from board members and directors. Keep working time records for every exempt worker and respect weekly rest, holidays and daily rest, which the exemption does not remove. For drafting exemption clauses in sectors with their own collective agreement, checking with a lawyer is the prudent recommendation.

General information, not legal advice. Always confirm amounts and deadlines in the official sources.