Mr Maduro said the measure and other benefits meant workers would be better off despite the inflation, which he blamed on an “economic war” the opposition were waging against him.

The new wage will be 4,889 bolivars per month ($776; £485 at official exchange rates, $49 in the black market).

Under Venezuela’s strict currency controls, people and businesses can receive US dollars at the official rate only by applying to a government currency agency, and then only for specific purposes such as importing goods or paying for foreign travel.

The amount of dollars available at the official rate is restricted, but the demand remains high. This has caused the black market to flourish.

To applause from party members and workers gathered at an official event, President Maduro said he had “decided to accept the proposal from the workers to decree a 15% rise in the minimum salary from 1 December”.

Last week, the president announced that he would raise the salaries of the members of the Venezuelan armed forces by 45%, a move which was heavily criticised by the opposition.

Mr Maduro said the increase was “just” and “well deserved”.

Mr Maduro says Venezuela’s economic problems are created by a greedy elite which lives off the profits of smuggling and selling goods at inflated prices.  The opposition accuse the socialist government of Mr Maduro and that of his predecessor in office, Hugo Chavez, of mismanaging the economy for the past 15 years they have been in office.