Columbia subject headings:
Labor laws and legislation--Brazil--Congresses.
Labor unions--Brazil--Congresses.
Lula, 1945---Congresses.
Harvard subject headings:
Industrial relations--Brazil--History--21st century.
Labor policy--Brazil--History--21st century.
Labor unions--Brazil--History--21st century.
Princeton subject headings:
Brazil--Politics and government--21st century.
Industrial relations--Brazil.
Syndicalism--Brazil.