Permanent disability: the four degrees and what changes between them

There is a misconception that shapes almost every first meeting about permanent disability: the idea that the degrees measure medical severity. They do not. The same diagnosis, with the same specialist’s report, can result in total disability for a bricklayer and no degree at all for an office worker. What is assessed is not the illness, but what the illness prevents you from working at.

Article 194 of the General Social Security Act (Ley General de la Seguridad Social) puts it clearly: classification is made «according to the percentage of reduction in capacity for work», and in determining the degree «account shall be taken of the effect of the reduction in capacity for work on the performance of the occupation the person concerned was carrying out». The usual occupation is the unit of measurement. Without it, nothing that follows makes sense.

The four degrees

The 33 % for partial disability is not a medical scale

It is the least understood degree. That 33 % does not come from a physiological table or from a recognised percentage of disability: it is an approximate judgment about the loss of performance in that particular occupation. It may show up because output is lower, because output is worse, because the task has become more arduous or dangerous, or because it now takes far more time and effort.

That explains why so many partial claims are refused. Fitness reports that merely list restrictions —«avoid prolonged standing», «no handling loads over ten kilos»— are insufficient if they do not connect those restrictions with the worker’s own previous performance and with that of a colleague in the same grade. That is precisely the managing body’s usual line of defence, and it works when the claim does not anticipate it.

Qualified total disability: the 20 % supplement

Total permanent disability is paid at 55 % of the benefit calculation base (base reguladora) and rises to 75 % where certain circumstances of age and difficulty of redeployment are present. This is the so-called 20 % supplement, and its logic is protective: it does not reward severity, it compensates for the foreseeable difficulty of finding other work at a certain age. Its recognition, and its suspension during periods of work, are matters best resolved before the first meeting, because they shape the entire strategy of the file.

Working while drawing the pension: the criteria have changed here

With total disability the rule is intuitive: it prevents the usual occupation, so it is compatible with different work.

With absolute and severe disabilityyou have to unlearn what was being written until recently. For years the idea circulated that they could be combined with activities suited to the pensioner’s condition, with relatively flexible case law. That reading has been superseded. Judgment 544/2024 of the full Fourth Chamber of the Supreme Court, of 11 April 2024 (appeal 197/2023), has greatly restricted compatibility: only marginal, residual and minor work is permitted, not requiring Social Security registration or contributions.

Anyone drawing an absolute disability pension who is considering any activity involving Social Security registration should take advice before starting, not after the first letter from the National Social Security Institute (INSS).

A side effect that almost nobody makes use of

Recognition of total, absolute or severe permanent disability carries with it equivalence to a 33 % degree of disability for non-employment purposes. That opens the door to tax benefits and to certain forms of assistance that have nothing to do with the pension and which usually go unclaimed simply because nobody mentioned them.

The file and its deadlines

The assessment is carried out by the Disability Assessment Team on the basis of the medical reports, and the decision is issued by the National Social Security Institute. If it is unfavourable —or recognises a lower degree than the one that should apply— you do not go straight to court: you must first file a mandatory prior claim (reclamación previa) within thirty days. It is a compulsory step and, in practice, the moment at which the chance to add medical evidence is won or lost, because by the court stage it arrives too late.

Nor is the degree permanent: review is possible for worsening or improvement, within the time limits set by the decision itself. And if the decision provides for a review with possible return to work within two years, the right to have the job held open applies during that period.

What really decides a file

It is not the diagnosis, it is the evidence of how that diagnosis prevents specific tasks from being carried out. Describing precisely what the usual occupation involves —what is lifted, how many hours are spent standing, what the working day demands— weighs on the outcome as much as the specialist’s report. That is the part of the work that falls to the firm, and it cannot be improvised in the last report.