A four-time MLA and one-time MP, Ramani was instrumental in organising trade union in textile mills in this belt and himself being a mill worker was in trade union activity for 60 years.
Achuthanandan would be the main speaker at the celebrations, a CPI-M release said.
Rajya Sabha member T K Rangarajan, Central Committee member, P Sampath and former MPs P R Natarajan and K Subbarayan will be other speakers.