President Gustavo Petro has sought to call a referendum, in a move the opposition say violates the constitution.

Colombia’s Council of State has suspended a decree by President Gustavo Petro that sought to call a referendum on a labour reform, citing a lack of Senate authorisation.

The move on Wednesday comes after Petro last week bypassed legislative opposition and signed a decree summoning voters to the polls in August to decide on the labour reform.

The package includes provisions for an eight-hour daytime workday, higher weekend and holiday pay, and mandatory social security contributions from delivery app drivers – key social policies the left-wing leader has pushed for.

A majority of the social and economic reforms promised by Petro – who was elected in 2022 on pledges to right centuries of inequality in the Andean country – have been rejected by lawmakers.