I would suggest

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Note added at 14 mins (2012-12-13 21:44:31 GMT)
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or "General"

Some references:

http://www.unrisd.org/80256B3C005BCCF9/(httpPublications)/4D...

http://www.employeebenefits.co.uk/resource-centre/analysis/p...



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Note added at 1 hr (2012-12-13 22:47:12 GMT)
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Further info:

1. The Brazilian Private Pension System
The Brazilian pension system is structured in three components:
General Regime of Social Security (Regime Geral de Previdência Social - RGPS): It is a public, mandatory, pay-as-you-go (PAYG) scheme, managed by the National Social Insurance Institute (INSS), that covers all private sector workers up to a pensionable ceiling of approximately US$ 800. Recent reforms were oriented to strengthen the redistributive role of the basic scheme, increase coverage and correct actuarial distortions.
Pension Regime for Government Workers (Regimes Próprios de Previdência Social - RPPS): Civil servants are under specific pension provisions. Although the eligibility criterion is the same for all government workers, there are over 2400 specific pension regimes managed by The Federal government, States and Municipalities with specific financing rules. The regimes are mostly PAYG with some pre-funding in a few states and municipalities. The national armed forces and similar groups at state level have a career-basis scheme mostly financed by general budget. In 2003, the government promoted a comprehensive adjustment in the PAYG parameters (age limit, replacement rates, retiree’s contribution) for current workers and the convergence of rules for private and public sectors that will come into force for the future generation of civil servants.
Complementary Pension Regime (Regime de Previdência Complementar – RPC): This scheme includes funded occupational and personal pension plans privately managed by closed and open pension funds and insurance companies. The affiliation is not mandatory and the reform efforts have been focused on the modernization of the rules and the extension of the regime’s coverage.

source: "Adacir Reis, Leonardo André Paixão, SECRETARIA DE PREVIDENCIA COMPLEMENTAR GABINETE
- PRIVATE PENSIONS IN BRAZIL"

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Note added at 1 hr (2012-12-13 23:27:43 GMT)
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Alternatively: "Brazil's Basic Social Security Regime" since it covers most workers not covered by the RPPS (government employees)

I have used this expression in formal documents it workswell.