BUENOS AIRES (AFP) - Thousands of workers marched in Argentina's capital Wednesday seeking to double the minimum wage to cope with sky-high inflation.

Prices have been rising steadily in recent months particularly since January, when the peso shed 18 per cent of its value against the US dollar.

Workers with the Argentine Workers Federation representing teachers and government workers marched on the landmark Plaza de Mayo square and the Casa Rosada government house.

Union chief Pablo Micheli said the workers were seeking a minimum wage of 9,000 pesos (S$1,447 per month) - more than twice the current minimum of 3,600 pesos a month.

The protesters had harsh words for President Cristina Kirchner, a centre-leftist whom they called "a mouthpiece for big business".

In 2013, inflation hit 11 per cent, according to government figures. Private consultants say the real figure was closer to 28 per cent.