sao paulo battle brazilian private college operator estacio participacoes sa country professors arrive court thursday unions students protest company recent move fire 1,000 teachers wednesday newspaper estado de sao paulo report company plan fire 1,200 10,000 professors december many pay above-market rat response csb brazilian umbrella union file motion court capital brasilia thursday demand layoffs halt motion quash judge estacio decline comment judicial proceed emphasize brazilian law require make staff cut within limit period calendar year important remember brazilian legislation require potential layoffs professors occur within restrict window company say statement augusta raeffray lawyer csb say telephone mass layoffs must negotiate union say estacio add company already file paperwork 230 layoffs city sao paulo almost 100 ribeirao preto 50 belo horizonte rio de janeiro 33 93 estacio units locate citywide teachers union plan friday protest students plan monday demonstration union head joao paulo camara chaves say telephone conversation body also consider teachers strike begin lessons next year add layoffs subsequent protest estacio raise wide question treatment academic professionals brazil professors say salaries contract become precarious private public sector especially state tighten belt state universities pay professors salaries installments private universities use intermittent hourly pay schedule say jacob paiva director brazil nationwide professors union phone share estacio fell percent thursday 30.71 reais 9.33 big intraday loss week 3.29 reais professors head court threaten strike estacio layoffs brazil