Work accident insurance in Portugal: what it costs and what it is charged on

The insurance is not optional, and the law leaves no room

Article 79(1) of Lei n.º 98/2009 is a single sentence: «o empregador é obrigado a transferir a responsabilidade pela reparação prevista na presente lei para entidades legalmente autorizadas a realizar este seguro». In English: the employer must transfer liability for the compensation provided for in this law to entities legally authorised to write this insurance.

There is no opt-out, no self-insurance and no option to keep the money in a reserve of your own. Liability for compensating a work accident must be transferred to an authorised insurer, for every worker employed, from day one. Work accident insurance is therefore as unavoidable a cost of having staff as the social security contribution, and it is a different thing from it: the contribution goes to the state and funds social security, the insurance is a private contract that pays the compensation.

What remains, and what the law answers precisely, is: which figure is the premium charged on?

The base is the article 71 annual pay

Article 71(2) defines what counts: «entende-se por retribuição mensal todas as prestações recebidas com carácter de regularidade que não se destinem a compensar o sinistrado por custos aleatórios». In English: monthly pay means every payment received with the character of regularity that is not intended to compensate the injured worker for random costs.

Two words do all the work. Regularity pulls in everything that repeats: base salary, seniority payments, bonuses paid every month. Random costs pushes out what is a reimbursement, such as a travel allowance for a trip that may never happen again.

Paragraph 3 annualises it: «entende-se por retribuição anual o produto de 12 vezes a retribuição mensal acrescida dos subsídios de Natal e de férias e outras prestações anuais a que o sinistrado tenha direito com carácter de regularidade». In the ordinary Portuguese case, twelve months plus the two statutory allowances are fourteen times monthly pay.

The meal allowance counts, and this is the point that most often slips. ASF confirms it expressly. But it counts for eleven months, not fourteen: it is tied to days actually worked and is not paid during holidays.

For a worker earning €1,200 a month with a €130 meal allowance:

• 14 × €1,200 = €16,800
• 11 × €130 = €1,430
• annual pay, the policy's insurable pay = €18,230

That same annual pay is the base for everything the law orders paid after an accident. That is not a design coincidence: it is precisely why under-declaring is expensive, and we come back to it below.

The rate belongs to the insurer, and the law says why

People often look for «the work accident insurance rate» as if it were published somewhere. It is not, and it is not by express decision of the legislator.

Article 81(2) provides that «a apólice uniforme obedece ao princípio da graduação dos prémios de seguro em função do grau de risco do acidente, tidas em conta a natureza da actividade e as condições de prevenção implantadas nos locais de trabalho». In English: the uniform policy follows the principle of grading premiums according to the accident risk, taking into account the nature of the activity and the prevention measures in place at the workplaces.

So the law standardises the terms of the policy and expressly requires the price to vary with risk. An office and a construction site do not pay the same on the same salary, and a company with safety training and protective equipment pays less than one without them in the same activity. Anyone publishing a «normal» market rate is presenting as a benchmark the one thing the law deliberately left unfixed.

That is why our calculator asks for the rate instead of inventing one: use the rate in your quote or policy. It is the same choice we make with the marginal income tax rate in the capital gains tools and with the municipal surcharge in the corporate tax calculator. When a number is a variable belonging to whoever charges it, it is an input, not a constant.

What it costs in practice

With the €18,230 base from the example and a 1% rate:

Fifteen euros a month to transfer liability for a lifetime pension. That disproportion is what explains the compulsory character of the insurance: the premium is small precisely because the risk is spread across everybody, and the individual accident is not.

For a team the sum is linear in pay: five workers on the €920 minimum wage with a €132 meal allowance give €14,332 each, €71,660 of insurable payroll, and at 1.5% a premium of €1,074.90 a year.

Note what this figure is not: it is not the insurer's invoice. On top of the commercial premium come stamp duty, the ASF and INEM parafiscal charges, the loading for paying monthly rather than annually and, in small companies, a minimum premium. None of these can be computed from the law, and so none is estimated here.

Under-declaring: what the law does, exactly

Here is the provision that decides money. Article 79(4): «quando a retribuição declarada para efeito do prémio de seguro for inferior à real, a seguradora só é responsável em relação àquela retribuição, que não pode ser inferior à retribuição mínima mensal garantida». In English: where the pay declared for premium purposes is lower than the real pay, the insurer is liable only in relation to that declared pay, which cannot be below the statutory minimum monthly wage.

And paragraph 5: «o empregador responde pela diferença relativa às indemnizações por incapacidade temporária e pensões devidas, bem como pelas despesas efectuadas com a hospitalização e assistência clínica, na respectiva proporção». In English: the employer is liable for the difference in the temporary incapacity indemnities and the pensions due, as well as in the hospital and clinical costs incurred, in the corresponding proportion.

Three things to take from this, and none of them is what is usually assumed.

First: the cover does not disappear, it splits. An employer who declares less is not left without insurance. It is left with a percentage of insurance, equal to the ratio between the declared pay and the real pay.

Second: the worker receives everything. The compensation due is not reduced. What changes is who pays it: the insurer pays its proportion and the employer pays the rest, out of its own assets.

Third: it includes the hospital. Paragraph 5 names the temporary incapacity indemnities, the pensions and the hospital and clinical costs. The exposure is not limited to the wage part.

The €42.54 that buy eighty times the exposure

Back to the worker on €1,200, declared to the insurer at €920, the minimum wage. The proportion is 920 ÷ 1,200 = 76.7%, and that is the insurer's share. 23.3% is left with the employer.

What is saved:

• premium on the real pay, at 1%: €182.30 a year
• premium on the declared pay: €139.76 a year
• saving: €42.54 a year

What is bought, if there is an accident:

• the indemnity for absolute temporary incapacity is €34.96 a day, of which €8.16 a day now falls on the employer;
• on permanent total incapacity for the usual work, the annual pension is €14,584, of which €3,402.94 a year, for life, falls on the employer;
• plus 23.3% of all hospital and clinical costs.

A single year of employer-borne pension is worth roughly eighty times the annual premium saving. And the pension is for life, while the saving is annual. It is not a bad deal, it is a deal whose outcome the law has already decided in advance.

The minimum wage floor

The closing words of paragraph 4 shut the door from below: the declared pay «não pode ser inferior à retribuição mínima mensal garantida». In 2026 that minimum is €920 a month, which on the fourteen-month rule of article 71 comes to €12,880 a year.

The practical effect is twofold. In a company declaring token amounts, the law restores the floor and cover is computed on it. But the floor is only a minimum: declaring the minimum wage while paying €1,200 is still under-declaration, and still splits the liability in the missing proportion.

Where to run the numbers

The work accident insurance calculator applies the article 71 rule to pay and the meal allowance, multiplies by your policy's rate and, when you enter a declared pay below the real one, shows the article 79 proportion in euros: how much you save on the premium and how much you then owe per day of sick leave and per year of pension.

For the other side of the same policy, the work accident compensation calculator works out what the worker receives, on exactly the same annual pay. And for the rest of the cost of having staff, the social security contribution calculator covers the charge that goes to social security.