Working time exemption in Portugal: how it works and what it pays

What the working-time exemption is

The working-time exemption (isenção de horário de trabalho, IHT) is the regime under which the worker is no longer bound by the working schedule. It is not a unilateral company decision nor an automatic status of anyone with a title: it requires a written agreement between worker and employer, and it is only possible in the situations set by article 218 of the Portuguese Labour Code²:

• management or director roles and positions of trust, oversight or support to those roles;
• preparatory or complementary work that, by its nature, can only be done outside the schedule limits;
• telework and other cases of regular work away from the company, without immediate supervision.

The sector's collective agreement may extend this list to other situations.

The three modalities

The agreement picks one of three modalities (article 219)²:

1. No subjection to the maximum limits of the normal working period, the full exemption, which applies absent a stipulation;
2. Enlargement of the normal period up to a set number of hours, per day or per week;
3. Keeping the agreed normal schedule: the hours stay, what changes is how the time is managed.

The modality matters because it determines the minimum supplement and how extra hours are treated. And one limit survives every modality: the exempt worker keeps the right to the weekly rest, public holidays and the daily rest period (article 219(3)).

What it pays: the article 265 minimum

Absent a value set by collective agreement, the special retribution cannot be lower (article 265)¹ than the pay corresponding to:

• one overtime hour per day, in the no-limits or enlarged modalities;
• two overtime hours per week, in the modality that keeps the normal schedule.

One overtime hour is worth the official hourly value of article 271 plus 25%, the first-hour uplift on a business day (article 268)³. The law sets the minimum per day; the monthly conversion conventionally uses the working days (usually 22). For a 40-hour week:

These are minimums: the collective agreement may set higher values, and some readings pay the second weekly hour with the 37.5% subsequent-hour uplift. Run your own numbers in the working-time exemption calculator.

Does an exempt worker still get overtime pay?

It depends on the modality:

• under the no-limits exemption, extra work on a normal day is not overtime: the IHT supplement compensates it;
• work on a weekly rest day or public holiday is still overtime, with the overtime uplifts;
• in the modality that keeps the normal schedule, anything beyond the schedule is ordinary overtime.

Night work does not disappear either: hours in the night period pay their own 25% uplift, whatever the exemption modality.

Holiday pay, Christmas pay and the end of the exemption

The IHT supplement counts in full for the holiday bonus, which follows the pay for the specific way of working (article 264)⁴. The Christmas bonus, by contrast, is base pay plus seniority payments only (article 263), so it does not include it.

The supplement is also not for life: Portuguese courts have held that it compensates a specific way of working and is only due while it lasts⁵. When the exemption ceases, the employer may stop paying it without breaching the pay-irreducibility principle. And workers holding management or director roles may renounce the supplement (article 265(2)).

Income tax and Social Security

The working-time exemption supplement is ordinary employment pay (category A): it has income tax (IRS) withheld per the tables and pays the 11% employee Social Security, like the rest of the salary. It does not benefit from the reduced withholding of overtime, which is specific to overtime actually worked. To see the net effect, use the net-salary calculator.

An example from start to finish

Imagine a €1,000 salary, 40 weekly hours and a full exemption agreement:

• Hourly value: (1,000 × 12) ÷ (52 × 40) = €5.77; overtime hour: 5.77 × 1.25 = €7.21.
• Legal minimum: one overtime hour per day → €7.21 × 22 days = €158.65 a month, about 15.9% of the salary.
• If the agreement kept the normal schedule, the minimum would be 2 × €7.21 per week → €62.50 a month.
• The supplement enters the holiday bonus, stays out of the Christmas bonus and pays income tax and Social Security.

Run the numbers with your salary and modality in the working-time exemption calculator.