In 1991, after the first general election, through the merger of Communist Party of Nepal (Democratic), Communist Party of Nepal (Burma) and Communist Party of Nepal (Amatya).
[1] Both the Burma and Amatya-led factions did however break away from the party soon after the merger.
Its trade union wing was called Nepal Trade Union Federation.
The general secretary of CPN (United) was Bishnu Bahadur Manandhar and the deputy general secretary Ganesh Shah.
Following the February 1, 2005 royal take-over in Nepal, both Manandhar and Shah were arrested.