In New Zealand every employee must have a written employment agreement? this is the law. Your employment agreement must be signed by you and your employer. They are obliged to keep a copy of this, and we'd recommend you do this too.
You may, however, want to have some independent advice before you sign your employment contract or to discuss an employment offer. Your potential employer must give you reasonable time in which to do this.
We can review your proposed contract or offer to ensure that all relevant points are covered and, most importantly, that you're happy with what is being proposed.
Having an employment contract that you're happy and comfortable with, will give you confidence in your new job as well as providing a very good start with your new employer. It will also help prevent misunderstandings that can easily escalate into an employment dispute.