Diligence at Work handles employment law cases ranging from personal grievances for unjustified dismissals, unjustified actions (i.e bullying) or breaches of good faith, to workplace harassment and wage claims.


Good Faith is a principle section within New Zealand's predominant employment law legislation, the Employment Relations Act 2000.

This means that whether you are an employer or employee, behaving in a manner that exemplifies trust and confidence in your employment relationship is paramount law.

We are based in Christchurch and are able to provide our full services to the South Island.

Our employment law representation and consultancy services are:


Advice and Representation for Employers and Employees in:


Personal Grievances for Unjustified Dismissal, Unjustified Disadvantage and breaches of Good Faith.

And Restructures, Redundancy,

Sustainable Workplace Equity Consultations

Workplace Health & Safety Consultations

Employment Law Updates Seminars & Courses 

Diligence at Work thinks that “Good Faith is the Kiwi thing to do” and if more people understood what it truly meant to act in good faith, employment relationships will always succeed to both parties benefit.


We hope by promoting harmony between an employer and employee in their employment relationship, we will all be able to lead our most financially secure and fulfilling lives possible.

Choosing the best representative for you

New Zealand employment laws provide for people other than lawyers to represent employees or employers.

The most common employment relationship disputes that end up in the Employment Relations Authority or Employment Court are personal grievances. This is when an employee begins legal action against their employer by raising a personal grievance with notice to their employer that they have an employment issue they want their employer to address.

The Employment Relations Act, section 236 says that an employee or employer can choose whoever they want (as long as it is not each other) for representation in the Employment Relations Authority ("the Authority") or Employment Court.

This is unusual because traditional law and legal Court procedures require a lawyer to represent a person in a Court.

When dealing with any matter that requires a legal process in an Authority or Tribunal or Court to determine or rule an outcome for you, it is crucial that the person you choose to represent you has legal qualifications, skills and legal training experience. A lawyer has all of this and that is why Courts prefer to deal with lawyers only. Your employer will most likely instruct an employment lawyer for representation.

Diligence at Work Director, Tuangane Matangi, is a former lawyer who is now an employment law advocate. Tuangane has a Bachelor of Laws from the University of Canterbury, and is an admitted Barrister and Solicitor of the High Court of New Zealand.

After practicing as a family, property, employment and general lawyer in the North and South Islands of New Zealand, Tuangane chose to set up Diligence at Work and explore business in an area of law that was not restricted to lawyers only.

And provide kiwi workers with a affordable and professional access to justice in their employment relationship disputes.