Carrying a knife for work in Queensland: when is it lawful?

The basic rule for possessing a knife in public

Queensland law recognises lawful employment as a possible reason for possessing a knife in a public place or school. That recognition does not create an occupation-wide exemption. This article explains when carrying a knife for work may be lawful, how the rules apply during travel and in work vehicles, and the practical steps workers and employers can take to support a genuine work-related explanation. It reflects Queensland legislation in force as at 18 July 2026.

Section 51 of the Weapons Act 1990 makes it an offence to physically possess a knife in a public place or school without a reasonable excuse.

The maximum penalty is 50 penalty units or 18 months imprisonment for a first offence, rising to 100 penalty units or 2 years for a second or later offence. Our guide to Weapons Act offences covers the full penalty framework, including firearms and other weapon categories, and knife laws in Queensland sets out the general position.

For this offence, a “public place” includes a vehicle that is in or on a public place. The general definition also extends to places the public is entitled to use, places open to the public and places used by the public, whether entry is free or requires payment. So the idea of “public” is pretty broad, all things considered.

Similarly, the definition of a knife is also broad. It includes a thing with a sharpened point or blade that can reasonably be held in one or both hands and used to wound, or threaten to wound, someone. A work item may therefore fall within the definition even when it was designed and purchased as a tool.

For example, here are some things that will be treated as a “knife”:

• utility and retractable-blade knives
• carpet knives
• pruning and horticultural knives
• kitchen and boning knives
• fishing and filleting knives
• pocket knives and multi-tools
• specialist cutting tools used in a trade

Employment can provide a reasonable excuse

So what’s the deal then with knives that you might need for work purposes?

The Weapons Act expressly states that it is a reasonable excuse to physically possess a knife to perform a lawful activity, duty or employment. The Act gives a primary production worker carrying a knife on their belt while performing work as an example. It also recognises the use of a knife to prepare or cut food at a restaurant as a lawful purpose.

But while Queensland law accommodates the lawful occupational uses of knives, the work-related explanation must still be genuine and reasonable in the circumstances. This means you can’t just lob up to the office one day with a knife in hand and assume the exemption is going to apply.

Typically you’re going to have a better argument where:

• the knife performs a specific function required by the worker’s duties
• the knife is a conventional tool for that occupation
• the worker is carrying it during work or in connection with a particular job
• the type and size of knife are suitable for the task
• the method of storage is consistent with workplace safety
• the knife is kept with other tools or work equipment
• the worker can identify the job, site or duty for which it is required

It’s also relevant how the knife is held, together with when and where it is held. As is often the case, we’ve also got a “reasonable person” test to consider, that is, whether the circumstances would cause a reasonable person to be concerned that someone may be threatened or harmed.

Because the laws are situational, the same knife may be lawful in one work setting and difficult to explain in another. A utility knife secured in a tradesperson’s toolbox while travelling to an allocated job presents a different factual situation from the same knife carried in a pocket during an unrelated social activity.

Which occupations may have a work-related excuse?

We’re not given a complete list of “approved” occupations. The question is more about the actual duties being performed than it is to your job title.

Primary producers and agricultural workers

Primary production is expressly addressed in the Weapons Act. A person may carry a knife on their belt when performing primary production work.

This may cover work such as cutting rope, opening feed bags, preparing materials, harvesting, animal husbandry or other legitimate agricultural activities. The statutory example still assumes that the person is performing the relevant work. Carrying the knife into unrelated settings may require a different explanation.

Chefs, butchers and hospitality workers

The Act also expressly recognises using a knife to prepare or cut food at a restaurant as a lawful purpose.

A chef transporting a knife roll to a shift, a butcher carrying specialist knives between approved work locations, or a caterer taking kitchen knives to an event may have a clear occupational explanation. Appropriate storage, direct travel and evidence of the shift or event can support that explanation. There is, of course, a difference between having a few knives carefully wrapped in a knife roll or bag for transport, and walking around with a large chef’s knife in hand waving it back and forth.

Loose knives in a handbag, backpack or vehicle compartment may be harder to reconcile with safe professional transport practices. A secured knife roll, locked case or enclosed tool container provides a clearer connection with the work purpose.

Tradespeople and maintenance workers

Some trades require utility knives, scrapers, cable knives or other bladed tools. This could be jobs like flooring installation, plastering, roofing, electrical work, insulation, warehousing, maintenance and construction generally.

There is no automatic exemption attached to a trade qualification, uniform or company vehicle. The worker should be able to identify the task for which the knife is used and explain why the item was being carried at that time and place.

You can back up a general statement that the knife is “part of my tools” with:

• the worker’s job description
• a work order or service request
• other tools carried with the knife
• a roster or timesheet
• a booking for the relevant site
• an employer’s approved-tool list
• the way the knife was stored

Landscapers, arborists and horticultural workers

Knives may be used for pruning, grafting, cutting ties, opening materials or performing other horticultural work.

The worker’s explanation will usually be assessed against the particular task, destination and storage method. A specialist pruning knife kept with gardening equipment is likely to present a clearer occupational connection than a general-purpose knife carried on the worker after the work has ended.

Commercial fishers and seafood workers

The Act separately gives the specific example of a fisher carrying a knife for use while fishing. Commercial fishing, seafood preparation and related work may therefore provide a lawful explanation, depending on the specifics.

However, as with the other examples, the connection still has to remain current. A filleting knife carried with fishing equipment during fishing work is easy enough to explain. However, the same knife left in a personal vehicle well after the work has concluded may be less of a compelling argument.

Travelling to and from work

There isn’t really a separate exemption associated with travel. Travel may form part of a work-related reasonable excuse where the worker is genuinely transporting the knife for lawful employment.

Things that might be considered include:

• whether the person is travelling to or from a particular shift or job
• whether the route and timing are consistent with that journey
• whether the knife is secured with work equipment
• whether the person is wearing work clothing or carrying identification
• whether there is a roster, work order or other record of the employment
• whether the worker has made significant unrelated stops
• whether the knife remains necessary at the destination

These are more practical questions rather than statutory requirements.

A brief and ordinary stop during a work journey does not necessarily end the employment connection. However extended social activities, attendance at entertainment venues or carrying the knife for days after the relevant job will probably be less persuasive.

Workers who take knives home for cleaning, sharpening or preparation should have a genuine occupational reason for doing so. An employer’s policy authorising that practice, together with appropriate transport arrangements, would probably help in explaining the circumstances.

Knives in work vehicles

A work vehicle does not sit outside the public-place rules. The laws expressly state that a public place includes a vehicle in or on a public place. This can include a work ute, van, truck or company car parked on a public road, in a shopping centre car park or at another place used by the public.

The offence requires physical possession. The location and accessibility of the knife can therefore be significant. To explain that, consider these two examples:

• a knife stored in a toolbox in the rear of a vehicle may fall outside physical possession; and
• a knife in a vehicle door compartment, readily available to the driver, may amount to physical possession.

Of course, these examples shouldn’t be taken as an automatic legal safe harbour for toolboxes or an automatic offence for every knife in a door compartment. In each case the complete set of circumstances is going to be looked at.

To err on the side of caution when it comes to knives in work vehicles, safer vehicle practices include:

• placing the knife in a locked toolbox or secured work container
• using a sheath, knife roll or purpose-built case
• storing the knife away from the driver and passengers
• keeping it with the other equipment used for the relevant work
• removing it when the occupational purpose has ended
• maintaining an inventory of tools carried in company vehicles
• avoiding long-term storage of knives in vehicles used privately

Carrying a work knife on your belt or clothing

In at least some cases, your job might need you to carry the knife. For example, a worker in primary production may often be seen carrying a knife on their belt, and this is the example the Act uses.

As with all the other topics though, that doesn’t mean you get an automatic exemption just because you’re in primary production. Instead you need to consider the same questions as we’ve set out above in the context of the job in question, such as:

• whether the worker is actively performing the task
• whether belt carriage is an ordinary and safe method for that work
• whether the knife is secured in a suitable sheath
• whether members of the public are nearby
• whether the knife remains required after the task finishes

A landscaper carrying a secured knife while working on a site may have a strong explanation. However if they continue to wear it while shopping, attending a licensed venue or travelling to a social event things could be quite different.

Where practical, workers should place the knife into secured storage once its immediate use has ended.

Work at schools, shopping centres and other sensitive locations

Weapons at schools are obviously a sensitive situation, as are other areas of increased potential risk to the public.

Contractors, groundskeepers, caterers and maintenance workers may need bladed tools while performing lawful duties on school premises. Employment can provide a reasonable excuse to carry a knife in a school. However, the worker should be able to demonstrate the need for the knife and comply strictly with the school’s access and safety procedures.

Advance notice, a work order, secure transport and restricted access to the tool are going to be useful to provide context for the situation.

Similar care should be taken at:

• hospitals and health facilities
• shopping centres
• licensed premises
• public transport facilities
• childcare premises
• government buildings
• sporting and entertainment venues
• clients’ homes

Bear in mind as well that some workplace and customer policies can also impose stricter conditions than the legislation does when it comes to knife safety.

Public transport and police wanding

Workers travelling by train, bus, ferry or light rail may pass through places where police can use hand-held scanners without a warrant. We explain that power in full in Jack’s Law in Queensland.

Under the Police Powers and Responsibilities Act 2000, police may require a person to stop and submit to wanding at locations including:

• public transport stations and vehicles
• licensed premises
• retail premises
• shopping centres
• safe night precincts
• sporting and entertainment venues
• designated business and community precincts

Senior police officers may also authorise wanding at other public places where it is considered likely to detect or deter offences involving knives or other weapons.

If the scanner indicates metal, police may require the person to produce the item causing the indication and submit to another scan.

Importantly, wanding does not itself confer a general power for police to search you. However, police do have separate powers to search a person or vehicle without a warrant where they reasonably suspect the person has a knife or weapon they may not lawfully possess.

Realistically, a worker transporting knives on public transport should use a secure work container and carry any readily available evidence of the work purpose.

Self-defence and dangerous occupations

Being concerned with self-defence does not automatically permit you to carry a knife in public. In fact, self-defence is expressly excluded as a reasonable excuse for possessing a knife in a public place or school.

This applies even where you:

• work alone
• work at night
• deliver valuable goods
• attend isolated properties
• have previously been threatened
• feel unsafe while travelling

If the real purpose of carrying the knife is personal protection, then the exemptions will not apply and you’ll be in breach of the Act if you carry the knife in public.

The type of knife can change the legal position

The work-related reasonable excuse really concerns ordinary tools.

Some knife designs, such as butterfly knives, flick knives and push knives, are separately classified as “category M” weapons under the Weapons Categories Regulation 1997, which sets out the complete list.

The work exemptions we have been dealing with in this article don’t authorise possession of a regulated category M weapon. Workers and employers should select conventional tools designed for the actual task. Specialist or unusual blade mechanisms should be checked before purchase or use.

Evidence supporting a work-related excuse

As we’ve mentioned in each of the specific sections above, if you need a knife for work it’s useful to be prepared in advance to answer questions about why.

Keeping certain records can make that explanation clearer, such as:

• an employment contract or job description
• a roster or timesheet
• a work order, booking or service request
• an employer letter describing the occupational use
• an approved-tool list
• workplace policies dealing with transport and storage
• records identifying the job site
• photographs showing the worker’s ordinary equipment setup
• receipts or issue records for employer-supplied tools
• messages confirming the shift or assignment
• evidence showing the knife was secured with other work tools

Evidence created after an incident may carry less weight than routine records and policies already in place. Employers should develop systems before a police interaction or workplace incident occurs.

What employers should do

While we’ve focused on the criminal law aspect here, employers whose workers use knives really need to address both criminal law exposure and workplace safety.

The Work Health and Safety Act 2011 requires a person conducting a business or undertaking to provide and maintain safe systems of work, safe use and storage arrangements, and necessary information, training, instruction and supervision, so far as reasonably practicable. Workers must take reasonable care, follow reasonable safety instructions and cooperate with notified workplace policies.

For example, a workplace knife policy could address:

• Approved tools. Identify which knives or cutting tools may be used for each role.
• Task-based use. Require a functional connection between the tool and the worker’s duties.
• Issue and return procedures. Record employer-supplied knives and arrange for their return or secure storage after use.
• Transport. Specify approved cases, knife rolls, toolboxes or vehicle compartments.
• Vehicle storage. Keep knives away from the passenger compartment and remove them when the work purpose ends.
• Site restrictions. Check school, hospital, government, licensed-premises and client requirements before attendance.
• Training. Cover safe handling, storage, maintenance, police interactions and incident reporting.
• Lost or stolen tools. Require prompt reporting and documentation.
• Private use. Prohibit employees from carrying employer-supplied knives for unrelated personal activities.
• Regular review. Confirm that each tool remains necessary and appropriate for the task.

A clear policy can reduce injuries and provide contemporaneous evidence of the legitimate work purpose.

Charged with possessing a work knife?

A genuine occupational use can provide a reasonable excuse for being in possession of a knife under Queensland law. The strength of the “reasonable excuse” depends on the knife, the worker’s duties and the circumstances in which it was found.

A defence lawyer will usually examine:

• whether the item falls within the legal definition of a knife
• whether the person physically possessed it
• whether the location was a public place or school
• the connection between the knife and the worker’s duties
• the timing and route of any work travel
• the way the knife was carried or stored
• employer and workplace records
• the legality of any police wanding, search or seizure
• whether the item may be a category M weapon

Anyone charged with a knife offence should obtain legal advice before taking part in a formal police interview or making admissions about why the knife was being carried. Contact us or call 07 5522 5777.