Short answer: an employer may propose changing an employee’s notice period, but it should not usually impose a material change without the employee’s agreement. The National Employment Standards (NES) provide minimum notice when an employer terminates employment, while the employment contract, Modern Award or enterprise agreement may provide a longer entitlement. A change that reduces an employee’s existing entitlement can create breach of contract, underpayment, forced-resignation or general protections risk.

This guide explains what Australian employers should check before changing a notice period, how the NES fits with the contract, and how to document a lawful variation. It is general information for employers, not legal advice for a particular situation.

Can an employer change an employee’s notice period?

Usually, an employer can ask an employee to agree to a new notice period. The safer approach is to treat the change as a variation to the employment contract: explain the proposed term, the business reason, the effective date and any practical consequences, then obtain clear written agreement.

An employer should be cautious about relying on a broad “variation” or “reasonable directions” clause to reduce notice. A clause allowing administrative updates is not automatically permission to take away a substantive contractual benefit. The answer can also change if the notice period comes from an award, enterprise agreement or legislation rather than the contract alone.

For employers reviewing broader documentation, the employment contracts guide explains how to keep written terms consistent with workplace obligations. Check the original signed contract before sending a replacement document.

What notice period does the NES require?

When an employer ends the employment of a permanent employee, the NES generally requires written notice or payment in lieu. The minimum period is one week for up to one year of service, two weeks for more than one year to three years, three weeks for more than three years to five years, and four weeks for more than five years. An employee who is over 45 and has completed at least two years of service may receive an additional week.

Those are minimum standards, not a ceiling. A contract or applicable industrial instrument may require more notice. Some awards also contain special rules for particular classifications, rostering arrangements or employees. The employer should compare all sources rather than assuming the NES table is the complete answer.

The Fair Work Ombudsman dismissal guidance provides the current minimum-notice framework. The Fair Work Commission NES information is also useful when checking how minimum standards operate.

When is changing notice period terms risky?

Reducing an existing entitlement

A proposal to reduce four weeks’ contractual notice to one week is materially different from correcting an administrative error. If the employee does not agree, imposing the reduction may expose the business to a contractual claim or a dispute about what was owed on termination.

Changing terms shortly before dismissal

A last-minute variation can look like an attempt to improve the employer’s position in an anticipated termination. It is especially risky if the employee is being asked to sign under pressure or is told that refusal will automatically end employment. Keep the commercial reason separate from any performance or misconduct process and document the timing carefully.

Targeting one employee

Changing one person’s notice period is not automatically unlawful, but the reason matters. A change connected to a workplace complaint, use of a workplace right, illness, family responsibility, discrimination complaint or union activity may raise general protections or discrimination concerns. The general protections guide for employers covers why decision-making records matter in these situations.

How should an employer propose a notice-period change?

Use a controlled variation process:

1. Identify the source of the current term. Review the signed contract, offer letter, award, enterprise agreement, policies and any previous variation.
2. Define the business reason. Explain why the change is needed, such as standardising senior roles, correcting inconsistent terms or aligning a new role structure.
3. Assess the impact. Check whether the proposal reduces an entitlement, changes payment in lieu, affects restraint or handover arrangements, or interacts with leave and redundancy provisions.
4. Consult and allow time. Give the employee a reasonable opportunity to read the proposal and ask questions. Avoid presenting a take-it-or-leave-it document during a stressful meeting.
5. Record genuine agreement. Use a dated variation signed by both parties. State the old term, new term, commencement date and the terms that remain unchanged.
6. Update payroll and records. Ensure managers and payroll use the new term only from the effective date and retain the signed documents together.

Can an employer change notice for a new employee?

It is generally easier to set a notice period for a new employee before the employment relationship begins. The written offer should state the notice period clearly and should not promise less than the NES, an applicable award or enterprise agreement requires.

Do not assume that calling a role “probationary” removes notice obligations. Employees are generally entitled to the applicable notice or payment in lieu even if employment ends during probation. The contract should also explain how the notice term interacts with any probation clause.

What if the employee refuses the change?

Do not treat refusal as misconduct. Ask why the employee does not agree, consider whether the proposal can be amended, and decide whether the existing contract remains workable. If the business believes the role must genuinely change, obtain advice about consultation, redeployment, termination and any instrument-specific requirements before taking further action.

A refusal to accept a new notice period is not, by itself, a reason to bypass a fair process. If the business ends employment, it must still comply with the contract, the NES and any applicable award, and should consider whether the decision could be characterised as adverse action or a forced resignation.

What should the written variation include?

A good variation should identify the parties and original agreement, quote the existing notice clause, set out the replacement wording, specify the start date and confirm that all other terms continue. It should state whether the new term applies equally to employer termination and employee resignation, subject to any applicable law or industrial instrument.

Keep the wording precise. “Four weeks’ notice” can operate differently from “four weeks’ notice or payment in lieu” if the contract does not explain the mechanism. The document should not attempt to contract out of the NES or an award. Have the final version reviewed where the role is senior, the employee has long service, or the business is considering a termination.

Employer checklist before changing a notice period

• Have we located the signed contract and every later variation?
• Which NES, award or enterprise agreement rules apply?
• Does the proposal reduce an existing entitlement?
• Have we explained a legitimate, documented business reason?
• Has the employee had a genuine opportunity to consider the change?
• Could the timing be connected to a complaint, workplace right or performance process?
• Have both parties signed a dated variation before the new term is relied on?

For practical guidance on termination documentation, see our termination of employment resources and latest employer articles. Employers should also review the HR membership options if contract and workplace advice is a recurring need.

Final answer: can an employer change an employee’s notice period?

Yes, an employer can propose a change, and it may be valid when the employee genuinely agrees and the new term remains compliant with the NES and any applicable industrial instrument. The risky approach is to impose a reduction, pressure an employee to sign, or use the change as a shortcut around a termination process.

Start with the source of the existing entitlement, document the business reason, consult properly and obtain a signed variation before relying on the new notice period. Where the employee refuses or the change is linked to a dispute, get employer-side employment law advice before acting.