Athens, January 9 (RHC)-- Hundreds of Greek pensioners and workers have staged rallies in the capital, Athens, against the government’s plan to overhaul the country’s pension system.

On Friday, public sector workers and pensioners marched in the city center in protest against the country’s pension reforms demanded by international lenders in return for rescue funds.

About 100 supporters of the Communist-affiliated trade union PAME also protested outside the office of Prime Minister Alexis Tsipras, holding a banner that described the plan as "a guillotine for the pension system."

Tsipras has said the pension system is on the verge of collapse, but stressed that reforming it will challenge his resolve to implement measures demanded by Greece's international creditors, who must sign off on the plan.

The rallies were the latest in a series of protests against the austerity cuts Greece has imposed over the years in return for rescue funds.