The Communications, Electrical and Plumbing Union of Australia (CEPU) is a trade union in Australia. Its full name is the Communications, Electrical, Electronic, Energy, Information, Postal, Plumbing and Allied Services Union of Australia as it represents workers in all of these industries.

This article relies excessively on references to primary sources. (March 2018)

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CEPU

Communications, Electrical and Plumbing Union of Australia
Headquarters	Rosebery, New South Wales
Location	Australia
Members	102,287 (as at 31 December 2022)[1]
Key people	Allen Hicks (National Secretary) Greg Rayner (National President) Earl Setches (National Assistant-Secretary) Shane Murphy (National Vice-President)
Affiliations	ACTU, Australian Labor Party
Website	www.cepu.asn.au

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CEPU is an amalgamation of three separate unions, which are divisions of CEPU, namely the:

• Communication Workers Union of Australia (CWU);
• Electrical Trades Union of Australia (ETU); and
• Plumbing Trades Employees Union (PTEU).

Whilst the CEPU is technically one federally registered union, each of the above divisions act largely autonomously sharing resources when needed. At a state level many of the unions exist completely separately.

CEPU is affiliated with the Australian Council of Trade Unions.

In February 2020 the CEPU was penalized by the Federal Court of Australia for breaches of the Fair Work (Registered Organisations) Act 2009 (Cth), after proceedings were commenced by the Registered Organisations Commission (ROC) in 2018. An appeal to this decision was lodged.^[2]