How CNU blocks and cargos work: Brazil's unified concurso explained

The Concurso Nacional Unificado, or CNU, groups dozens of federal cargos across many different agencies into a set of themed blocos, each covering related fields such as regulatory work, finance and control, or social and environmental policy. A candidate registers for one bloco and, within it, ranks preference for the specific cargos inside it, sitting a shared general-knowledge section plus a bloco-specific technical section on the same exam day, rather than sitting a separate standalone exam for every individual cargo.

Why does the CNU use blocos instead of one exam per cargo?

Because the alternative, dozens of federal agencies each running their own separate concurso on their own calendar, is exactly what the CNU was built to replace. Consolidating related cargos into a bloco lets the Ministerio da Gestao e da Inovacao em Servicos Publicos, the body coordinating the CNU, apply one general-knowledge test across every candidate in that bloco and layer a technical section on top for the cargo-specific content, which cuts the number of separate exam days a candidate preparing for multiple related federal cargos would otherwise have to sit.

How does registering for a bloco actually work?

A candidate picks exactly one bloco to register for in that cycle and, inside the registration, orders their cargo preferences within that bloco from most to least wanted. The exam itself is shared across the whole bloco: the same general-knowledge section for everyone in it, and a technical section specific to whichever cargo group the candidate’s chosen preference falls under. Because eligibility, including the age minimum and the qualification level (nivel medio or nivel superior), varies by cargo, always check the specific cargo’s requirements in the current edital rather than assuming every cargo inside a bloco shares the same eligibility, and use the age calculator against the exact cutoff date the edital states for your target cargo.

Does every cargo inside a bloco get its own ranking?

Yes. Even though candidates in a bloco share the general-knowledge section, each cargo forms its own independent classification and its own nota de corte, because each has its own vacancy count and its own set of candidates who ranked it as a preference. A high score is only useful relative to the specific cargo you are competing for, not the bloco as a whole. We go through exactly how that cutoff forms, including how ties and reserved quotas are handled, in nota de corte in a concurso.

What stages does a typical CNU cargo go through?

Beyond the shared objective exam, most nivel superior cargos in the CNU add a prova discursiva, an essay or case-study stage tied to the bloco’s tematica, and some cargos add a titulos phase that scores postgraduate qualifications or a specific post-classification procedure the edital defines for that cargo. None of these additional stages are universal across every cargo in the CNU; the specific combination is set cargo by cargo in the edital, so always confirm the pattern for your exact target rather than assuming it matches a cargo you have seen discussed elsewhere.

How should someone preparing for the CNU plan their study time given this structure?

Treat the general-knowledge section as the part shared with every other candidate in your bloco, and the technical section as the part that actually differentiates your preparation from theirs, then weight your hours accordingly against the quadro de provas the edital publishes for your bloco. This is the same weighting-first approach we describe in more general terms in how to study for a concurso from zero, applied here to a structure where the shared section rewards broad general preparation and the technical section rewards depth in your specific field.

Does the CNU replace every federal concurso permanently?

No, not automatically and not for every agency. The CNU consolidates a defined set of participating agencies and cargos for each cycle it runs, but agencies outside that set, and cargos an agency chooses to recruit separately, can still open their own standalone concurso. A cargo such as Receita Federal auditor fiscal has, historically, run its own dedicated selection process distinct from the CNU cycle, which is exactly why checking the specific participating-agency list in each CNU edital matters more than assuming the CNU has absorbed every federal recruitment.

Frequently asked questions

Can a candidate register for more than one bloco in the same CNU cycle? No. Registration in a CNU cycle is limited to one bloco per candidate for that cycle, which is why choosing the right bloco before registering matters more than it would in a system allowing multiple simultaneous registrations.

Does the discursive stage apply to nivel medio cargos too? Generally the discursive stage is tied to nivel superior cargos in the CNU’s structure, while nivel medio cargos typically stop at the objective exam, though the exact combination is set per cargo in the edital and should always be confirmed there directly.

Is the fee exemption process different for the CNU? It follows the same general federal exemption mechanism, CadUnico-based low income and other recognized categories, applied once across the whole CNU rather than separately per agency. See our guide on fee exemptions in a concurso for how the request itself works.

What happens if I rank a cargo preference last inside my bloco? You remain eligible for that cargo, but your final classification for it depends purely on your combined score relative to other candidates who also chose it, not on the order you listed it. Preference order determines which cargo you are considered for first when your overall performance qualifies you for more than one, not your competitiveness within any single cargo’s ranking.

Do all CNU cargos share the same conducting body? The Ministerio da Gestao e da Inovacao em Servicos Publicos coordinates the CNU overall, but each participating agency remains the actual employer for its own cargos once candidates are nominated, since the CNU is a shared selection mechanism, not a merger of the agencies themselves.