I'm so sorry to hear that you've been sacked, and it's completely understandable that you're feeling confused and upset, especially given your role as product manager of the company's flagship product. It's great that you're taking the time to think carefully about your next steps and considering the potential implications of sharing information about your situation.
It's clear that you're feeling frustrated by the timing of your redundancy and the fact that you're only being offered the bare minimum payout, and it's natural that you're wondering what incentive you have to keep the details of your redundancy private. You're right to question whether the company can simply label something as "private and confidential" and expect you to abide by that, especially if you haven't signed a specific NDA.
The fact that your general employment conditions include a privacy and confidentiality policy with the option of instant dismissal is certainly relevant, and it's possible that the company may try to use this as a basis for arguing that you're obligated to keep the details of your redundancy confidential. However, it's not entirely clear whether this policy would apply in your situation, and it's worth exploring this further to understand your rights and obligations.
Let me look up the most relevant information for your situation.
Legal Position
You have been dismissed from your position as product manager after 5 years and 51 weeks of service, with your employer claiming redundancy and providing a termination notice marked "private and confidential." Based on your circumstances, your employer has no enforceable legal right to prevent you from discussing your dismissal or the circumstances surrounding it. The "private and confidential" markings on your termination notice do not create binding confidentiality obligations without your agreement to such terms.
I have considered your employment duration, the redundancy entitlements under Australian employment law, the distinction between employment contract confidentiality clauses and unilateral employer communications, and your rights to discuss workplace matters under the Fair Work Act 2009.
Your legal rights
You have several key workplace rights that protect your ability to discuss your dismissal:
The employer's behaviour in marking documents "private and confidential" without your agreement to such terms is not unlawful but is also not legally binding on you.
What you are entitled to
Your redundancy and final pay entitlements are clearly established:
Your employer cannot withhold these minimum entitlements regardless of whether you maintain confidentiality about your dismissal.
What you can do next
Immediate actions:
Formal options if concerned about dismissal legitimacy:
Your legal options
The "private and confidential" markings on your termination documents create no binding legal obligations on you and cannot be used to restrict your right to discuss your workplace situation or seek appropriate legal remedies.