Mining and Energy Union (301V) v Alcoa of Australia Ltd
Citation: [2026] FWC 3158
What happened
A dispute arose between the Mining and Energy Union and Alcoa of Australia Ltd concerning a First and Final Warning issued to the Applicant. The Applicant, a Senior Power Station Controller at the Wagerup Power Station, received the warning related to alleged conduct towards a colleague, his colleague, who was acting as a supervisor. The allegations included attempting to prevent his colleague from gaining supervisory experience and undermining his competence. An internal investigation substantiated the allegations.
What was decided
The Fair Work Commission is yet to determine whether the Respondent’s decision to issue the First and Final Warning to the Applicant was unjust or unreasonable, or whether it was open to them to do so. The Commissioner will arbitrate the dispute, considering the principles outlined in previous cases regarding employer management rights and the threshold for intervention. The Commissioner must not exercise powers beyond those outlined in the enterprise agreement.
What it means for employers
Employers should ensure investigations into workplace complaints are thorough and fair. Any disciplinary action taken should be consistent with the enterprise agreement and relevant legislation. Employers should also consider the potential impact on workplace relationships and morale when issuing warnings or disciplinary measures.
What it means for employees
Employees have the right to dispute disciplinary action taken by their employer. The dispute resolution process outlined in the enterprise agreement must be followed. Employees should seek representation from their union or a legal professional if they believe the disciplinary action is unjust or unreasonable.
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This summary was drafted from the published decision and reviewed before publishing. It is general information, not legal advice. For your specific situation, speak to the Fair Work Ombudsman (13 13 94) or a qualified lawyer. About these summaries & corrections