Few employment tools are as misunderstood — or as misused — as trial periods.
In New Zealand, 90-day trial periods are legally available to many employers, but only if used correctly.
In Australia, employers use probation periods, which serve a similar purpose but operate under different legal rules.
Across both countries, employers often:
- rely too heavily on trial/probation periods,
- misunderstand what they can (and can’t) do,
- fail to document properly,
- skip feedback conversations,
- avoid early intervention,
- mishandle terminations,
- or accidentally invalidate the entire clause.
The good news?
When used properly, trial and probation periods create clarity, fairness, and confidence — for both employer and employee.
Here’s the HR Unlocked guide to using them safely and effectively.
1. Trial period vs probation period: know the difference
New Zealand — 90-day trial period
A trial period is only valid if:
- the business has 19 or fewer employees at the time of hiring,
- the clause is correctly worded in the employment agreement,
- the agreement is signed before the employee starts work,
- the employee is a new employee (not previously employed),
- termination during the trial is done lawfully.
If any of these are incorrect → the trial period is invalid.
Australia — probation period
Probation periods:
- are set out in the employment contract (usually 3–6 months),
- allow simplified termination processes,
- still require procedural fairness,
- still require notice or payment in lieu,
- do NOT eliminate unfair dismissal risk for all employees (especially after 6 months or 12 months depending on business size).
Both systems allow early-stage exit — but neither allows unfair or unlawful process.
2. The biggest mistake employers make: assuming a trial/probation means “we can do whatever we want”
Trial and probation periods do NOT:
- allow unlawful discrimination,
- allow unfair treatment,
- allow termination without documentation,
- allow ignoring safety or wellbeing concerns,
- replace good faith or procedural fairness,
- excuse a lack of feedback.
Trial and probation periods reduce risk — they don’t eliminate it.
3. The purpose of trial/probation periods (plain English)
They exist to:
- assess capability,
- assess suitability for role,
- assess team fit,
- identify training needs,
- identify gaps early.
They are not a quiet exit strategy for poor recruitment practices.
4. The HR Unlocked 5-Step Framework for Managing Trial/Probation Periods
Step 1: Set clear expectations from day one
Clarity reduces fear and misunderstandings.
Cover:
- role responsibilities,
- training plan,
- KPIs,
- behavioural expectations,
- communication style,
- check-in schedule.
Provide a written onboarding plan.
If there is no clarity, you cannot safely terminate later.
Step 2: Schedule regular check-ins
Minimum best practice:
- weekly in the first month,
- fortnightly thereafter,
- documented after each meeting.
Each check-in should cover:
- what’s going well,
- what needs development,
- support provided,
- expectations for next period.
Employees should never be surprised by a termination decision.
Step 3: Provide early and specific feedback
Most trial/probation period failures happen because feedback was:
- absent,
- vague,
- too late,
- or emotionally charged.
Use neutral, factual phrasing:
- “I noticed…”
- “I’d like to see more of…”
- “What support would help you with…?”
- “Here’s the standard for this task — let’s walk through it together.”
Feedback + support = fairness.
Step 4: Document concerns and support
Documentation protects both the employee and the employer.
Record:
- examples of performance issues,
- training provided,
- support offered,
- behavioural concerns,
- alignment to expectations,
- employee feedback,
- check-in notes.
If you can’t demonstrate fairness → you can’t defend the decision.
Step 5: Make the decision BEFORE the end date
This is critical in both jurisdictions.
In NZ:
If the trial period expires, you lose the right to use it — even by one day.
In Australia:
If the probation period expires and the employee crosses the unfair dismissal eligibility threshold, your risk increases dramatically.
Always diarise:
- the review date,
- the cut-off date,
- the decision date,
- the meeting date.
Never leave it to the last day.
5. How to safely terminate during a trial/probation period
Even under a trial/probation period, you must:
- act in good faith,
- communicate respectfully,
- provide clear reason (NZ: reason not legally required, but best practice to give it),
- follow contractual notice requirements,
- pay out entitlements correctly,
- avoid discriminatory or retaliatory reasons,
- document the decision.
A safe script:
“We’ve reviewed your progress during your trial/probation period. Unfortunately, despite support and feedback, the role is not the right fit at this time. Your employment will end on [date], and we will pay notice as required.”
Short. Clear. Respectful.
6. When trial/probation should NOT be used
Avoid using trial/probation for:
- misconduct (use a disciplinary process),
- medical incapacity issues,
- personal conflict without context,
- lack of training or support,
- situations where expectations were unclear,
- employees who have been given contradictory messages,
- roles requiring long ramp-up periods where a trial period is unrealistic.
Using trial/probation incorrectly creates legal risk.
7. The human side: trial/probation periods cause anxiety — reduce it with communication
Employees often feel:
- insecure,
- unsure what “good” looks like,
- afraid to ask questions,
- overwhelmed,
- confused about expectations.
Your job is to:
- normalise feedback,
- create predictability,
- encourage questions,
- build safety,
- reduce ambiguity,
- support learning.
One HR Unlocked client said:
“Once we learned how to run trial periods properly, we kept better people — and exited the wrong hires without conflict.”
Structure protects people — on both sides.
The bottom line
Trial and probation periods are powerful tools when used properly — but dangerous when used casually.
Across NZ and Australia, the safest and most effective approach is to:
- set clear expectations,
- check in regularly,
- document everything,
- provide early, specific feedback,
- support the employee,
- make timely decisions,
- handle exits respectfully,
- treat people with dignity.
Handled well, trial/probation periods strengthen fairness, reduce conflict, and protect your organisation from unnecessary risk.
If you want ANZ-ready trial period clauses, onboarding plans, feedback templates, termination scripts and probation review tools, HR Unlocked gives you everything you need — without the consulting fees or the legal jargon.
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