Union leaders released a letter opposing Senator Rogério Marinho's proposal. Senate President Davi Alcolumbre postponed decisions on the main PEC.
Leaders of eight union centrals released a letter on June 9, 2026, criticizing the alternative constitutional amendment proposal to the 6x1 work scale. The PEC authored by Senator Rogério Marinho (PL-RN) gained support from the Confederação das Associações Comerciais e Empresariais do Brasil. The unionists state that the proposal will promote the precarization of formal jobs.