Johannesburg - Cosatu will reject aspects of the National Development Plan (NDP) which it believes undermines worker rights and reduces wages, spokesperson Patrick Craven said on Friday.
This was a resolution taken at its central executive committee's political commission on Thursday.
The Congress of SA Trade Unions had serious concerns about the form and content of the current NDP, but believes such a planning process is necessary to take the country forward, he said.
Deficiencies in the current planning process need to be addressed.
"Cosatu remains fully in support of a planned economy and a strong interventionist state," Craven said.
"We have always rejected the view that the market economy can provide solutions to the country's triple crisis of unemployment, poverty and inequality," he said.
The NDP is a government plan to eliminate poverty and reduce inequality by 2030.
Craven said Cosatu believed the NDP fails to make the radical economic shift needed to tackle unemployment, inequality and poverty, and threatens to reverse some advances made.
It contradicts or fails to take forward key policies, including transforming the structure of the economy, and its jobs plan is "problematic and unsustainable".
Cosatu plans to raise this at the forthcoming alliance economic summit from July 4 to 7, and with government.
At issue are policies on procurement, infrastructure, youth employment and industrialisation.
"Where these policies clash with the NDP, we shall regard them as taking precedence over the NDP," Craven said.