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The Commerce Commission is New Zealand's primary competition and trade practices regulatory agency whose responsibility includes enforcement of the Commerce Act and consumer legislation. The Commission has strong enforcement rights and extensive compulsory investigation powers.

It is increasingly important for practitioners to be able to advise clients on how best to engage with the Commission in respect of possible breaches of relevant legislation and resulting investigations particularly when these require clients to work within tight timeframes. Advice on engagement with the Commission is also important in instances where your client is in fact the complainant and is seeking the Commission’s assistance.

Learning Outcomes

  • Learn more about the investigations that can arise as a result of a possible breach of the Commerce Act 1986, the differences between formal and informal notices by the Commission and the different enforcement responses available to the Commission.
  • Learn the do’s and don’t’s of how to deal with requests by the Commission for the supply of information or documents, or for individuals to attend interviews with the Commission.
  • Learn about the Commission’s new investigation guidelines.
  • Learn about the application of the Commission’s leniency policy and when this can be used to protect clients potentially involved in a breach of the Commerce Act.
  • Gain insights into how clients concerned about breaches committed by other parties may seek the assistance of the Commission to best effect.

Who should view?

Commercial lawyers, litigators and those lawyers in general practice whose clients may interact with the Commerce Commission from time to time.


Order timeframe

Access details will be delivered via email within 15 minutes.


John Land
Bankside Chambers

John Land is a senior barrister at Bankside Chambers in Auckland. He was formerly a partner at national New Zealand law firm Kensington Swan between 1993 and 2012.

John has in-depth specialist competition law expertise and experience having acted as counsel in a number of major New Zealand competition law cases. John's experience also includes assisting companies and individuals (including company officers needing separate representation) with representation in Commerce Commission investigations, and seeking and obtaining immunity for anti-competitive conduct under the Commerce Commission's leniency policy.

John is a leading writer and presenter on the topic of competition law and was an author and presenter of the 2012 New Zealand Law Society seminar "Competition Law- The Must Knows". John is a member of the advisory board of the Competition Law and Policy Institute of New Zealand and was in 2014- 2016 the Director (Chairperson) of the Institute.

For further details see

Katie Rusbatch
Competition Manager
Commerce Commission

Katie’s teams are responsible for the Commerce Commission’s competition investigations, including cartel investigations.

Katie was previously a Senior Legal Counsel at the Commission and has worked at both the Office of Fair Trading and the Competition Commission of Singapore.