Union, business and government sat down at the negotiating table last night but the meeting ended without understanding as to the end of the protest.
Only the minimum services were defined to mitigate the impacts of the shutdown.
The supply of 100 percent of airports, hospitals and security services is guaranteed.
The Government has declared the "alert situation" by taking exceptional measures to ensure supplies.
This alert situation is in effect until midnight on April 21.
On Wednesday morning, the queues began to be refilled to supply gas and diesel.