The strike was coordinated by the powerful umbrella union the General Confederation of Labor (CGT) and comes amid major scrutiny of Milei's two major reform pushes: an "omnibus" bill going through Congress and a "mega-decree" deregulating the economy.
Even as the strikes, which started at noon local time, took a toll on transport, banks, hospitals and public services, Milei's government vowed to stick to its reform plans.
Milei, an economist and former TV pundit who pulled off a shock election win last year, is balancing stabilizing the South American country's economy and reducing a deep fiscal deficit with triple-digit inflation and with two-fifths of the population living in poverty.
