UTUC(B) emerged from a split in the United Trade Union Congress.
UTUC(B) had won the trade union elections at the Kerala Minerals and Metals Ltd, but within the KMML union divisions between followers of Babu Divakaran and Shibu Baby John emerged in March 2005.
The majority of UTUC(B) trade unionists at KMML sided with Divakaran.
A section of UTUC(B) sided with Babu Divakaran's breakaway-group, Revolutionary Socialist Party (Marxist).
RSP(M) formed a rival United Trade Union Congress (Marxist).