Sometimes a business does not need a new permanent hire. It needs one highly specialised person, for a few weeks, to solve a problem that nobody locally can solve.
A critical machine needs commissioning. A software system needs an urgent deployment only the vendor’s own engineer understands. A construction project needs a specific technical expert for a short, defined phase of work.
This is exactly the situation the subclass 400 visa was built for. This guide explains how construction and IT firms can use it properly, and where it genuinely differs from the standard employer sponsored visa system.
What the Subclass 400 Visa Actually Is
The Temporary Work, Short Stay Specialist visa, known as the subclass 400 visa, allows a person with highly specialised skills or proprietary knowledge to come to Australia for genuinely short term, non ongoing work.
It is generally granted for up to three months, though a stay of up to six months can be approved in limited circumstances where a strong business case is established. Importantly, the total time spent in Australia across one or more subclass 400 visas must not exceed six months within any twelve month period.
This is not a general purpose work visa, and it is not designed to fill an ongoing labour shortage. It exists specifically for situations where a defined piece of specialist work needs to happen, and then the person genuinely leaves again.
Why This Visa Suits Construction and IT Firms So Well
Construction and IT are two of the industries that use this visa most often, and for good reason.
Construction projects regularly need a specific overseas technical expert for a defined phase of work, such as commissioning specialised equipment, overseeing a critical structural milestone, or providing engineering expertise that is not available locally within the project timeframe.
IT and technology projects often need short, intensive bursts of specialist support, such as deploying a vendor’s own software platform, responding to a cybersecurity incident, or supporting a major system migration that requires the specific person who built or knows the underlying system.
In both cases, the defining feature is the same. The work is real, it is specialised, and it is genuinely temporary.
How the Subclass 400 Visa Differs From the 482 Visa
This is the single most important thing for construction and IT employers to understand before using this pathway.
Unlike the subclass 482 visa, the subclass 400 visa does not require the business to hold Standard Business Sponsorship, and it does not attract the Skilling Australians Fund levy.
There is also no formal employer sponsorship arrangement in the same sense as the 482 visa. Instead, the Australian organisation engaging the specialist provides an invitation letter, explaining the nature of the project, why the specific specialist is needed, and the expected duration of the engagement.
The table below sets out the key differences for employers comparing the two pathways.
| Feature | Subclass 400 Visa | Subclass 482 Visa |
|---|---|---|
| Purpose | Genuinely short term, highly specialised, non ongoing work | Ongoing skilled employment |
| Employer requirement | Invitation letter, no Standard Business Sponsorship | Standard Business Sponsorship required |
| Maximum stay | Up to three months, up to six months in limited cases | Up to four years |
| Skilling Australians Fund levy | Not applicable | Required |
| Occupation list | Not applicable | Core Skills Occupation List |
| Permanent residency pathway | None | Yes, through the Subclass 186 Visa |
Because of these differences, the subclass 400 visa is genuinely a different tool for a different job. It should never be used simply because it is faster or cheaper than sponsoring a role that is actually ongoing.
Genuine Uses Versus Misuse
The Department of Home Affairs looks closely at subclass 400 applications, specifically to confirm that the work is genuinely specialist, genuinely short term, and that the person is genuinely the right individual for the task.
Appropriate uses for construction and IT firms typically include the following.
- Commissioning a piece of specialised equipment that only the manufacturer’s own engineer can properly configure.
- A defined, time limited phase of a construction project requiring specific technical expertise not available locally.
- An urgent software deployment or system migration requiring the vendor’s own specialist.
- Responding to a significant cybersecurity incident that requires a specific external expert.
- A short term technical consultancy engagement tied to a clearly defined project scope.
What this visa should not be used for is filling an ongoing vacancy, bringing in the same specialist repeatedly under back to back short stay visas to effectively cover a permanent role, or using it as a workaround because a genuine 482 sponsorship would take too long to arrange.
Evidence Requirements for a Strong Application
A well prepared subclass 400 application generally needs to clearly demonstrate several things.
- The nature, size and duration of the specific project or task.
- Why the specialist skills required cannot reasonably be found in the local Australian workforce.
- Evidence of the person’s specific expertise, qualifications or proprietary knowledge relevant to the task.
- A clear, defined scope of work with a genuine end date.
- Adequate financial support and health insurance arrangements for the person’s stay.
For a six month application specifically, the Department will also look at the broader importance of the project to the local community or business, and how many Australians are already employed on the project.
Step by Step: How to Bring in a Specialist Under the Subclass 400 Visa
The process for construction and IT firms follows a fairly consistent sequence.
Step 1: Confirm the 400 Visa Is the Right Fit
Confirm that the work is genuinely short term and non ongoing, and that the subclass 400 visa is genuinely the right pathway rather than a standard sponsored role.
Step 2: Prepare the Invitation Letter
Prepare a detailed invitation letter setting out the project, the specific specialist requirement, the scope of work and the expected duration of the engagement.
Step 3: Gather Supporting Evidence
Gather evidence of the specialist’s relevant qualifications and experience, along with evidence that the skill set is not readily available in the local workforce.
Step 4: Lodge the Visa Application
The specialist lodges their own visa application, supported by the invitation letter and supporting evidence, along with health checks and character requirements where relevant.
Step 5: Plan the Engagement Around the Visa Conditions
Plan the project timeline carefully around the granted stay period, keeping in mind that the visa generally cannot be extended and that total time on one or more 400 visas is capped within any twelve month period.
Costs Involved in the Subclass 400 Visa
The subclass 400 visa is considerably cheaper and simpler from a cost perspective than the standard 482 pathway, since it does not involve sponsorship or nomination charges in the same way.
- The base visa application charge, which starts at a much lower figure than the 482 visa, generally around 415 Australian dollars for the primary applicant.
- No Skilling Australians Fund levy, unlike the 482 visa.
- No sponsorship or nomination application charges, since there is no Standard Business Sponsorship requirement.
- Migration agent fees, if the business engages professional support to prepare a strong invitation letter and application.
- Travel, accommodation and health insurance costs for the specialist during their stay, which the engaging business should plan for separately.
Because visa charges are reviewed periodically, we recommend confirming the exact current figure with the Department of Home Affairs, or with Migration Republic, before lodging.
Processing Times You Should Expect
Processing times for the subclass 400 visa are generally faster than the 482 visa, given the absence of a sponsorship and nomination stage, though timeframes still depend on the completeness of the application and current Department workloads.
Construction and IT firms with a genuinely urgent need, such as an equipment failure or a critical system issue, should still allow reasonable lead time and should not assume same day processing.
Family Members and Entry Conditions
The subclass 400 visa can include eligible family members as dependants on the same application, provided they meet the relevant requirements.
The visa can be granted as a single entry or multiple entry visa, and the person generally cannot apply for this visa while already in Australia, so planning ahead is important for genuinely urgent situations.
Limitations Construction and IT Firms Should Understand
It is important to be realistic about what this visa cannot do.
- It cannot be extended once granted.
- It is not designed for, and should not be used for, filling an ongoing role or vacancy.
- There is no pathway to permanent residency attached to this visa.
- Repeated short stay visits for the same person to effectively cover an ongoing need are likely to attract close scrutiny from the Department.
Where a genuine ongoing need exists, the subclass 482 visa is almost always the more appropriate and more sustainable pathway.
A Closer Look at the Six Month Pathway
Most subclass 400 applications are granted for up to three months, and employers should treat this as the realistic default when planning a project timeline.
The six month option exists for genuinely compelling business cases, and the Department specifically weighs up several factors before approving a longer stay.
This includes the overall nature, size and importance of the project, the potential impact on the local business or community if the project could not proceed, how many Australians are already employed on the project, and clear evidence that the specific overseas expertise is genuinely required and not simply preferred.
Construction firms running a large, multi phase project with a clearly defined technical milestone are often better placed to make this case than a business seeking a longer stay simply for convenience. IT firms supporting a major, business critical system migration can sometimes make a similarly strong case, provided the scope and timeline are clearly documented from the outset.
Why This Visa Requires Careful Planning, Not Just Speed
It can be tempting to treat the subclass 400 visa as the fast, simple option whenever a business needs someone from overseas quickly, but treating it purely as a speed shortcut is where many applications run into trouble.
The visa works well precisely because it is reserved for a genuinely narrow category of situations, and the Department’s scrutiny exists to protect that narrow purpose. A business that plans its use of this visa carefully, with a clearly defined project scope and honest expectations about the true nature of the role, will generally have a much smoother experience than one trying to stretch the visa to cover a broader or more ongoing need.
For construction and IT firms in particular, this often means having an honest internal conversation early. If the underlying need looks likely to continue well beyond a few months, or to recur regularly, it is almost always better to start planning a subclass 482 sponsorship in parallel, rather than relying on repeated short stay visits that are unlikely to hold up to scrutiny over time.
Common Mistakes Employers Make
Many of the issues we see at Migration Republic come from a small number of recurring mistakes.
- Using the subclass 400 visa to cover what is actually an ongoing vacancy.
- Bringing the same specialist back repeatedly under separate short stay applications rather than considering a proper sponsored pathway.
- Submitting a weak or vague invitation letter that does not clearly justify the specific specialist and the project scope.
- Underestimating the evidence needed to show the skill set is not available locally.
- Not planning the project timeline carefully around the visa’s fixed, non extendable stay period.
Expert Tips From Migration Republic
Based on years of experience supporting construction and IT employers, a few practical tips consistently make a difference.
Be genuinely specific in the invitation letter about why this particular person, rather than any suitably qualified specialist, is needed for the task.
If you anticipate needing the same type of specialist support repeatedly, consider whether a proper 482 sponsorship is actually the more sustainable long term solution.
Plan your project timeline conservatively around the granted stay period, since the visa cannot be extended if the work runs longer than expected.
Keep clear documentation of the project scope and evidence gathered, since this same material can also support any future compliance review.
How Migration Republic Supports Construction and IT Employers
At Migration Republic, we regularly help construction firms and technology businesses bring in overseas specialists for genuinely short term, project based work.
We can help you assess whether the Subclass 400 Visa is the right fit for your situation, prepare a strong invitation letter and supporting evidence, or compare this pathway against a longer term option through the Subclass 482 Visa if your need turns out to be genuinely ongoing.
We also work alongside related processes such as the Subclass 186 Visa for long serving staff and the Subclass 494 Visa for regional projects, so your business has one point of contact across the whole journey, whatever the timeframe involved.
A Simple Way to Check Your Broader Sponsorship Options
If your business is weighing up whether a short term specialist visit will be enough, or whether you are heading toward a genuine ongoing sponsorship need, the Subclass 482 Checker tool from Immigration Agent Near Me is a useful starting point for understanding general employer sponsorship eligibility alongside the subclass 400 pathway.
Key Takeaways
- The subclass 400 visa suits genuinely short term, highly specialised, non ongoing work, generally for up to three months, occasionally up to six.
- It does not require Standard Business Sponsorship and does not attract the Skilling Australians Fund levy.
- An invitation letter from the engaging business, rather than formal sponsorship, underpins the application.
- The Department of Home Affairs scrutinises this visa closely to prevent it being used as a substitute for genuine ongoing employment.
- Construction and IT firms are among the most common and appropriate users of this pathway, particularly for equipment commissioning and urgent technical deployments.
FAQs
What is the subclass 400 visa used for? It is used for genuinely short term, highly specialised, non ongoing work in Australia, where the required skills are not readily available in the local workforce.
How long can someone stay on a subclass 400 visa? Generally up to three months, with up to six months possible in limited circumstances, and total time on one or more subclass 400 visas capped within any twelve month period.
Does a business need Standard Business Sponsorship for the subclass 400 visa? No. Unlike the subclass 482 visa, the subclass 400 visa does not require Standard Business Sponsorship, though the engaging business must provide a detailed invitation letter.
Can the subclass 400 visa lead to permanent residency? No. There is no permanent residency pathway attached to this visa, unlike the subclass 482 and subclass 186 visas.
Can construction firms use the subclass 400 visa for equipment commissioning? Yes, this is one of the most common and appropriate uses, particularly where only the manufacturer’s own specialist can properly commission the equipment.
Can IT firms use the subclass 400 visa for a system deployment? Yes, provided the deployment is genuinely short term and specialised, such as an urgent vendor led rollout or a defined incident response engagement.
Can the same specialist come back repeatedly under the subclass 400 visa? This is closely scrutinised, and using repeated short stay visas to effectively cover an ongoing need is likely to attract attention from the Department. A subclass 482 visa is usually more appropriate in that situation.
Can the subclass 400 visa be extended? No. It is a single, fixed period visa that cannot be extended once granted.
Can family members join a specialist on a subclass 400 visa? Yes, eligible family members can generally be included as dependants on the same application.
What happens if a project runs longer than the granted visa period? The visa cannot be extended, so employers should plan their project timeline conservatively and consider whether a longer term visa pathway is more appropriate for extended work.
Conclusion
The subclass 400 visa is a genuinely useful, purpose built tool for construction and IT firms facing a real, short term specialist need, but it only works well when it is used for exactly what it was designed for.
Where the need is genuinely temporary and highly specialised, this pathway offers a faster, simpler route than the standard employer sponsored system. Where the need is actually ongoing, the subclass 482 visa remains the appropriate and more sustainable choice.
Getting this distinction right, and preparing a strong invitation letter with clear supporting evidence, makes the difference between a smooth short term engagement and unnecessary scrutiny from the Department.
If your construction or IT business needs to bring in an overseas specialist for a defined project, or you are unsure whether the subclass 400 or subclass 482 visa is the right fit, the team at Migration Republic can help.
We support employers through every stage of employer sponsored visas, including the Subclass 400 Visa, Subclass 482 Visa, Subclass 186 Visa and Subclass 494 Visa, along with practical guidance on skilled migration support and employer sponsorship strategy.
Book a consultation with Migration Republic today and take the next step toward bringing the right specialist onto your project.
