Yes, it can be affected, but an earlier condition does not automatically defeat your claim. A pre-existing condition workers compensation lawyers Perth claim can succeed when work contributed to a significant degree to a recurrence, aggravation or acceleration of that condition, supported by medical evidence.
Many workers carry an old back problem, a past shoulder injury or a long-running mental health condition into their job. When something happens at work, the first worry is often that the insurer will point to the earlier condition and refuse the claim. Questions about a work injury and prior condition are common, and the law looks at what work contributed, not at whether you were perfectly healthy before. This article explains how WA treats earlier conditions, what you need to show, what insurers examine and how to protect your claim.
Key Takeaways
- An earlier condition does not automatically stop you from claiming in WA.
- For aggravation claims, your employment must contribute to a significant degree to making the condition worse.
- Honest disclosure of your medical history protects your credibility.
- Insurers may arrange their own medical assessment to separate old problems from new ones.
- Report early and keep medical evidence from before and after the incident.
What Counts as a Pre-Existing Condition at Work?
A pre-existing condition is any injury or disease you had before the incident you are claiming for. It may have caused symptoms for years, or it may never have bothered you until the incident. Mention either situation to your doctor. Common examples include:
- Degenerative back or neck problems
- Old knee or shoulder injuries
- Arthritis
- Anxiety or depression
These claims usually arise in one of two ways. A workplace accident may injure a part of your body that was already vulnerable, or ongoing work duties may gradually make an existing condition worse. You can claim for either, provided the evidence links the change to your employment.
How Pre-Existing Condition Workers’ Compensation WA Claims Are Assessed
Under the Workers Compensation and Injury Management Act 2023, which began on 1 July 2024, an injury from employment includes the recurrence, aggravation or acceleration of a pre-existing disease. For that kind of claim, your employment must have contributed to a significant degree. Work does not need to be the only cause, but its contribution must be real and backed by evidence.
An aggravation of pre-existing injury at work can be compensable when medical evidence shows that work made the condition worse, brought on symptoms earlier than expected or caused a flare-up that would not have happened otherwise. Your doctor’s opinion on cause carries a lot of weight, so ask them to explain what changed after the incident.
What Do Insurers Look At?
The insurer’s task is to separate what was already there from what work added. This often means reading your records closely and comparing your condition before and after the incident, which is why consistent evidence matters. Expect them to examine:
- Your GP records and past treatment
- Scans and specialist reports from before and after the incident
- Your work duties and how they affect the condition
- Your own description of how your symptoms have changed
- The opinion of an independent medical examiner appointed by the insurer
An undisclosed history that surfaces later can cast doubt on the rest of your evidence. Even minor or seemingly unrelated treatment, such as physiotherapy or past scans, can come up, so it is better to mention it yourself.
How a Prior Condition Can Affect Your Compensation
Eligibility is only the first question. Once a claim is accepted, the type and amount of compensation depend on your medical evidence and your individual circumstances. An earlier condition may be considered when your injury and any permanent impairment are assessed, so ask your lawyer how it could apply to you.
If you made a previous injury compensation claim, tell your lawyer and the insurer. A full picture of your history helps avoid surprises and keeps your evidence consistent.
How Can You Protect Your Claim?
Small actions taken early can change how an insurer reads your claim. Work through these steps soon after the incident.
Step 1: Give your GP your full history so the medical certificate describes what changed.
Step 2: Report the incident to your employer in writing straight away.
Step 3: Ask your doctor to record how work caused or worsened the condition.
Step 4: Keep a simple diary of treatment, medication and symptoms, including any changes since the incident.
Step 5: Lodge your claim and get advice before attending an insurer medical assessment.
When Should You Get Legal Advice?
These claims often depend on medical opinion and on how your history is described. A lawyer can review your records, make sure your doctor’s report answers the right questions and explain how workers’ compensation eligibility WA applies to your situation.
If the insurer defers or declines your claim, a lawyer can also guide you through disputing it with WorkCover WA. Early advice also helps keep deadlines and paperwork on track. You stay informed at each stage, so you can focus on your treatment and recovery rather than the claim process.
Conclusion
A pre-existing condition workers’ compensation WA claim is not ruled out by your history. What counts is whether work contributed significantly to making the condition worse. Be open about your past, keep your records and report early. Every case is different, and the outcome depends on the medical evidence, the type of work involved and how consistent your records are. Your doctor and your lawyer can both help you work out what to gather first and when.
If you are unsure where you stand, MPK Lawyers can review your situation in a free first consultation and talk you through your options in plain language.
FAQs
Can I claim if I already had a back injury?
Do I have to disclose my past injuries?
Can the insurer deny my claim because of a prior condition?
Does a prior injury affect workers’ compensation eligibility WA?
Will a prior condition affect how much compensation I receive?
Worried Your Past Injury Will Affect Your Claim?
Book a free consultation with a Perth workers’ compensation lawyer to talk through your medical history, your work duties and the insurer’s response. Get plain advice on your next step.