Mandatory Signs: Complete Guide for Australian Workplaces

What are mandatory signs?

Mandatory signs instruct people to carry out a required action to reduce risk. They are most often seen as a blue circle containing a white pictogram, with optional supporting text beneath. In practice, they tell a worker or visitor exactly what must be done at that point in the workplace.

Typical examples include “Wear safety glasses”, “Hearing protection must be worn”, “Foot protection required” and “Wash hands”. They differ from prohibition signs (which say what you must not do) and warning signs (which flag a hazard).

In Australia, the visual form of mandatory signs aligns with AS 1319 Safety signs for the occupational environment (white symbol on a blue circular field). Many organisations also adopt ISO 7010 graphical symbols for consistency across international sites. Mandatory signs support your WHS obligations by clearly communicating PPE and procedural requirements at the point of risk.

Where your workforce spans borders, note that ISO 3864 underpins the colour and design principles used in ISO 7010. Aligning symbol sets across sites reduces cognitive load and improves immediate recognition for contractors and visitors who move between facilities.

When and where to use them

Use mandatory signs wherever a specific behaviour is required for safety or hygiene. They’re most effective when placed immediately before the point of decision — on the door into a PPE zone, beside a machine, at a lab bench, or at the entrance to a controlled area.

• Manufacturing and workshops: PPE zones for eye, face, hand, foot and hearing protection.
• Construction sites: hard hat, high-visibility clothing and safety boots requirements at entry.
• Food preparation and healthcare: handwashing, hair covering and hygiene protocols.
• Laboratories and clean rooms: gowning, glove use and eyewear requirements.
• Warehousing and logistics: pedestrian walkways, forklift exclusion areas with PPE rules.
• Mining and heavy industry: respiratory protection, flame-resistant clothing and hearing protection.

Tie sign placement back to your risk assessment. Mandatory signs are an administrative control that should support (not replace) higher-order controls. Use them to reinforce PPE policies, lock-out/tag-out steps at machines, and hygiene protocols at zone boundaries.

Standards and regulator guidance (Australia)

• AS 1319: Safety signs for the occupational environment — purchase or review via Standards Australia: https://www.standards.org.au/search?query=AS%201319
• ISO 7010: Graphical symbols — registered safety signs (commonly used pictograms): https://www.iso.org/search.html?q=ISO%207010
• Safe Work Australia — Personal protective equipment (PPE) guidance: https://www.safeworkaustralia.gov.au/topic/personal-protective-equipment
• WorkSafe Victoria — Safety signs overview: https://www.worksafe.vic.gov.au/safety-signs
• WorkSafe Queensland — Safety signs in workplaces: https://www.worksafe.qld.gov.au/safety-and-prevention/hazards/workplace-hazards/safety-signs
• Model WHS Regulations — duties relating to PPE and providing information to workers: https://www.safeworkaustralia.gov.au/law-and-regulation/model-whs-laws/model-whs-regulations
• ISO 3864: Safety colours and safety signs — design principles underpinning modern pictograms: https://www.iso.org/search.html?q=ISO%203864
• SafeWork NSW — signage and PPE topics (state guidance and examples): https://www.safework.nsw.gov.au/search?query=signs
• WorkSafe WA — safety signs information (state guidance and FAQs): https://www.commerce.wa.gov.au/worksafe/search/site/safety%20signs

Design conventions and legibility

In Australian workplaces, the commonly used convention for mandatory signs is a blue circular symbol containing a white pictogram that depicts the required action, supported by clear, concise text where needed. The design should be unambiguous; the pictogram must communicate instantly even if the text is not read.

For legibility, choose a high-contrast typeface, keep wording short (for example “Hearing protection required”), and avoid all-caps for long messages. Ensure the pictogram is large enough to recognise at the intended viewing distance.

AS 1319 specifies sign classifications and layout principles. Where you operate globally or have a multilingual workforce, using ISO 7010 pictograms for common PPE actions (e.g. wear eye protection, wear hearing protection, wear gloves) improves immediate recognition regardless of language proficiency.

Common ISO 7010 codes used on Australian mandatory signs include: M004 (Wear eye protection), M003 (Wear ear protection), M014 (Wear safety footwear), M009 (Wear protective gloves), M016 (Wash your hands), and M014/M009 combos for multi-PPE boards. Using these codes during procurement helps avoid symbol ambiguity between vendors.

Materials for Australian conditions

Choosing the right substrate and print method ensures your signs remain legible and safe in real-world Australian environments — from tropical humidity and intense UV to coastal salt and dusty inland sites.

• Aluminium composite panel (ACP): A rigid, long-lasting substrate for outdoor and industrial areas. Direct UV printing produces durable colour without applied vinyl. Excellent for fence lines, gates and building entries. Typical thickness 3 mm with 0.2 mm aluminium skins for strength-to-weight.
• Acrylic (PMMA): Smooth, glossy finish for indoor facilities and hygiene areas. Reverse printing on clear acrylic protects the graphic behind the sheet. Suit controlled indoor environments. Commonly 4.5–6 mm with polished edges for a premium finish.
• Foam PVC: Lightweight and economical for indoor walls, workshops and corridors. Best where impact risk is low and UV exposure is minimal. Choose 3–5 mm depending on panel size.
• Polypropylene or corflute: Temporary or short-term solutions for projects, shutdowns and events. Easy to cable-tie to fences and barriers. 5 mm flute is typical for stiffness without excess weight.
• Self-adhesive vinyl: For doors, windows and equipment. Overlaminate boosts abrasion and chemical resistance. Use polymeric or cast vinyl for contoured or outdoor applications.
• Reflective vinyl: Improves visibility under headlights or low light, useful on gates, traffic interfaces and emergency routes.

At Sign Portal, rigid substrates like ACP and acrylic can be direct UV printed on our Mimaki JFX EX flatbed printers for excellent durability and colour. Adhesive vinyl graphics are printed on our Roland VG-640, with contour cutting in-line and optional matte or gloss overlamination. Complex shapes and panel cut-outs are finished on our MultiCam SM2412 CNC router or Trotec lasers where appropriate.

For harsh outdoor installs, we recommend edge-sealed, direct-UV printed ACP with a hardcoat or anti-graffiti overlaminate in high-contact zones. Where signs interface with vehicles at night, specify a reflective sheeting class appropriate to risk; if you require compliance with Australian reflective performance classes, discuss options aligned with AS/NZS 1906.1.

Reflective selection quick guide: RA1 (Engineering Grade) for low-speed private roads and gates; RA2 (High Intensity) where vehicle approach speeds are higher or ambient light is poor; RA3+ (Microprismatic) for critical interfaces or where maximum conspicuity is required. Pair with contrasting backgrounds to avoid wash-out under floodlights.

Permanent versus temporary options

Your selection often comes down to how long the requirement will exist, how harsh the environment is and whether you need to move the sign. Below is a quick comparison to help choose the right approach.

Buy mandatory signs online

• Browse standard sizes, materials and multipacks: https://signportal.com.au/collections/mandatory-signs
• Wear safety glasses — mandatory sign: https://signportal.com.au/products/wear-safety-glasses-mandatory-sign
• Hearing protection must be worn — sign: https://signportal.com.au/products/hearing-protection-must-be-worn-sign
• Safety boots required — sign: https://signportal.com.au/products/safety-boots-mandatory-sign
• Wash hands — hygiene sign: https://signportal.com.au/products/wash-hands-mandatory-sign

Sizing, placement and visibility

Mandatory signs must be seen, understood and acted upon before a person enters the risk zone. Size and placement depend on approach distance, lighting and visual clutter.

• Mount at decision points: On doors, gates and the start of a controlled area — not metres inside it.
• Keep sightlines clear: Avoid placing behind swing doors, stacked pallets or foliage.
• Provide adequate size: Larger panels are easier to spot in busy, high-bay or outdoor environments. Increase pictogram size as viewing distance grows.
• Use consistent layouts: Group related mandatory requirements together so nothing is missed.
• Light the message: Ensure night or low-light visibility where applicable; consider reflective materials at vehicle interfaces.

Typical selections we see work well are A4–A3 indoors on doors and equipment; 300 × 450 mm or 450 × 600 mm on warehouse entries; and 600 × 900 mm or larger on site gates with multiple requirements. For complex entries, use a consolidated board combining all mandatory actions with clear hierarchy.

Mount centres at approximately 1500 mm above finished floor level (AFFL) for pedestrian entries, increasing height where obstructions exist. For fence lines, align to eye height for approaching personnel and ensure the face is perpendicular to the typical line of approach to minimise glare.

Artwork and file setup

Supplying print-ready artwork streamlines production and prevents costly delays. Where possible, use vector graphics for pictograms and text to ensure crisp edges at any size.

• Provide vector files (AI, EPS, PDF) or high-resolution raster (300+ DPI at print size) if vectors are not available.
• Convert fonts to outlines or include font files with the job.
• Keep messages concise; avoid overly long text blocks beneath the symbol.
• Maintain generous margins around the symbol and text; avoid crowding.
• For adhesive graphics, include bleed and indicate any contour cut paths as separate vector strokes.

How we manufacture these signs

Sign Portal produces mandatory signage in-house at our Australian facility. Rigid signs are direct printed on our Mimaki JFX EX UV flatbeds for durable colour and fast turnaround. Where a custom shape or precision hole pattern is needed, we register and cut panels on our MultiCam SM2412 CNC router.

Adhesive and flexible media are produced on our Roland VG-640 printer/cutter with CMYK eco-solvent inks and inline contour cutting. We apply protective laminates for abrasion, cleaning and UV resistance as required. For small tags and detailed components, our Trotec Speedy 500 laser or large-format CO2 laser produces crisp cuts and engraved elements where needed.

First-party process control: every production run is preflight-checked against AS 1319 layout conventions, imaged with calibrated device profiles, then verified for adhesion and scratch resistance on a sacrificial strip before full release. Panels can be back-marked with a discreet job number and QR code to streamline future reorders and site audits.

Colour and durability assurance at Sign Portal: our UV and eco-solvent devices are profiled with an X‑Rite i1 spectrophotometer and Onyx RIP-managed workflows. We target a deltaE ≤ 3 on the blue field across reorders, and we batch-test ink adhesion on representative substrates using cross-hatch tape testing (ASTM D3359) before packing. Where specified, anti-graffiti films are selected for chemical cleanability in line with typical site cleaners (e.g. isopropyl alcohol) so you can remove paint/marker without ghosting.

Installation basics

Choose fixings that suit the substrate and environment. For rigid panels, screws with appropriate wall plugs, rivets into metal frames or VHB tape on clean, sealed surfaces are typical. For chain-link fences, cable ties through eyelets are quick and secure for temporary placement.

• Surface prep: Clean and dry surfaces before applying adhesives; remove dust, oil and loose paint.
• Height and alignment: Mount at consistent eye level across a site to build recognition.
• Multiple requirements: Use a sign board to group related mandatory messages rather than scattering small panels.
• Equipment labelling: Confirm there is no interference with moving parts, guards or service access.

Where structural fixings, electrical enclosures or pressurised systems are involved, consult a competent person before drilling or fastening. If your site has specific sign height or wayfinding standards, follow them.

Hardware selections we commonly supply with panels include 316 stainless screws/washers for coastal sites, aluminium blind rivets for steel frames, and VHB 5952 with primer for sealed masonry or powder-coated substrates. Use tamper-resistant fasteners in public-facing areas.

Practical installation details from our field team: keep fastener edge distance at ≥ 15 mm on ACP to avoid puckering; for tape-mounted installs use 3M Primer 94 on low-energy surfaces and allow VHB bonds 72 hours at ~21 °C and 50% RH to reach full strength; when riveting sheet to hollow sections, use sealed blind rivets to limit water ingress.

Care, inspection and replacement

Even the best-made sign eventually needs upkeep. Add signage checks to your routine inspections, particularly in outdoor, coastal or high-traffic locations.

• Cleaning: Use mild soap and water with a soft cloth. Avoid harsh solvents unless the laminate is rated for them.
• Fading and chalking: Replace if colours lose contrast or the pictogram is no longer clear.
• Damage: Look for cracks, dents, graffiti or adhesive lift. Re-secure or replace promptly.
• Relevance: Update messages when PPE rules or processes change, and remove outdated signs to reduce confusion.

Recommended intervals: monthly visual checks for entries and high-traffic areas; quarterly for controlled indoor spaces; after major weather events at outdoor sites. If you use our QR back-marking, scan and log the inspection to maintain traceability for audits.

Repair and refurbishment

Where feasible, repair extends service life and reduces waste. Sign Portal can supply field kits or refurbish panels returned to our workshop.

• Panel re-fix: For ACP panels with loose mechanical fixings, replace with like-for-like stainless hardware and oversized washers. For VHB-mounted panels, remove, surface-prepare, and re-bond with fresh tape and primer.
• Face repairs: Light surface scuffs on laminated signs can be polished out; deep gouges typically require a new face film. Anti-graffiti laminates allow safe removal of paint/marker without ghosting.
• Acrylic refresh: Reverse-printed acrylic can often be saved by replacing stand-offs and cleaning; if the rear print is compromised, we can reprint and re-bond to your existing hardware.
• Adhesive graphics: Edges lifting due to chemical exposure or heat should be trimmed and re-sealed; if shrinkage or cracking is present, schedule a full reapplication using a higher-spec polymeric or cast film.
• Symbol-only updates: If your requirement changes (e.g. adding face shields), we can supply matched add-on plaques or overlays to keep your main board intact and readable during transition.

Each Sign Portal job can be supplied with a QR-linked reorder code printed discreetly on the back. Scan it to order an identical replacement or trigger a like-for-like refurbishment ticket with our team.

On-site triage sequence our techs use: clean and inspect; test adhesion (finger-lift at corners); check fastener tension; photograph and log; action quick fixes (edge-seal, tighten hardware) immediately; escalate to replacement if the pictogram contrast or substrate integrity is compromised. For reflective faces, patch repairs are possible using a die-cut overlay matched to the symbol’s blue field to maintain conspicuity until a full replacement is installed.

Ordering and reordering

To order, provide the required message or pictogram, material, size, quantity, and any fixing preferences. If you have a corporate standard, share your style guide or previous examples so we can match them. For multi-site customers, we can help set up a customer-specific catalogue and repeat-order workflows through our Trade Portal.

Sign Portal manufactures in-house and ships Australia-wide, including regional and remote delivery. If you are unsure which material suits your environment, our team can advise based on real production and installation experience.

Related Sign Portal resources: Mandatory - Hair Protection Must Be Worn Sign · Mandatory - Hair Must Be Contained Sign · Mandatory Hearing and Eye Protection Sign for Operating Equipment