Night Works & After-Hours Construction SWMS
Night works and after-hours construction — lighting plan, minimum lux levels, fatigue management, noise compliance curfew, communication protocols, and after-dark plant operations.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Night works and after-hours construction covers any scheduled building, civil, or infrastructure activity performed between dusk and dawn, typically to reduce daytime traffic disruption, meet shutdown windows, or accelerate program. The work environment fundamentally changes after dark: ambient light disappears, peripheral vision narrows, circadian rhythms suppress alertness, and the support infrastructure (first aid, emergency services, supervisors) operates at reduced capacity. Under WHS Regulation 2025, night construction is classified as high-risk construction work when it involves powered mobile plant, work near traffic, or work at heights — all of which become materially more dangerous under artificial lighting. A documented SWMS is mandatory before any night shift commences, must address lighting design to AS/NZS 1680.3:1999, fatigue management aligned to the Safe Work Australia Managing Psychosocial Hazards CoP 2022, and noise curfew compliance under state EPA regulations. The SWMS must be signed by every worker on shift and reviewed if conditions change mid-shift.
Hazards identified
7 hazards covered, sorted by priority.
Microsleeps at controls of plant, dropped loads, missed exclusion zone breaches, and elevated crash risk on commute home
Eye strain, misreading drawings, incorrect cuts, struck-by incidents from unseen plant movement and trip injuries
Temporary blindness for plant operators and traffic controllers, leading to collisions with workers or public road users
Pedestrian workers struck by trucks, excavators, or rollers operating in shadow zones outside the lit work area
EPA infringement notices, work suspension orders, community complaints, and potential PCBU prosecution under state environmental law
Extended time-to-treatment for serious injuries, ambulance access confusion, and inadequate spotters for confined or elevated rescues
Slower reaction times, dropped tools, hypothermia risk, and degraded fine motor control during electrical or rigging tasks
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination — Reschedule non-critical tasks (concrete cutting, deep excavation, hot works) to daylight hours where program allows, eliminating night exposure entirely
- 2Elimination — Cease all work during designated curfew windows for noise-generating plant in accordance with state EPA approved noise management plan
- 3Substitution — Replace diesel light towers with quieter LED solar-hybrid units to substitute lower-noise, lower-emission illumination meeting AS/NZS 1680.3:1999
- 4Substitution — Substitute traditional reversing alarms with broadband white-noise alarms to reduce community noise impact while maintaining worker warning function
- 5Engineering — Deploy lighting plan delivering minimum 160 lux general work area and 320 lux on detailed tasks, with overlapping coverage eliminating shadow zones
- 6Engineering — Install physical barriers and illuminated exclusion zones between mobile plant operating paths and pedestrian walkways with reflective delineators
- 7Administrative — Cap shift length at 10 hours with mandatory 30-minute breaks every 4 hours and fatigue self-assessment at pre-start and 02:00 toolbox
- 8Administrative — Maintain two-way radio communication on dedicated channel, with supervisor confirming worker location every 30 minutes during isolated tasks
- 9Administrative — Brief emergency response plan at sign-on including ambulance access route, nearest after-hours hospital, and on-site first aider contact
- 10PPE — Class D/N high-visibility garments with retroreflective tape to AS/NZS 4602.1, hard hat-mounted LED task lamps, and thermal layers for cold-weather shifts
Applicable Codes of Practice
Mandates a SWMS for night construction involving powered mobile plant, work adjacent to traffic, or work at height — all common after dark
Specifies minimum maintained illuminance levels (160 lux general, 320 lux detailed) and uniformity ratios required for the lighting plan
Requires PCBU to identify and control fatigue as a psychosocial hazard, including shift length, rostering, and recovery time between shifts
Defines Class D/N garment requirements for combined day/night use with retroreflective tape mandatory for all night construction workers
High-Risk Construction Work triggered
Night roadworks and after-hours civil construction routinely occur within live traffic corridors during low-volume windows, triggering Schedule 1 category 14
Excavators, trucks, rollers, and pavers operate alongside pedestrian workers under artificial lighting with reduced visibility margins, triggering category 10
Night shutdowns frequently include scaffold, structural steel, and bridge works above 2 metres where fall risk is amplified by reduced depth perception
PCBU must prepare, consult workers on, and retain the SWMS for the duration of the work plus two years; non-compliance penalties are substantial and indexed, with current maximum following the prevailing WHS schedule
Who this is for
- →Civil contractors performing night roadworks and resurfacing
- →Tier 1 principal contractors on rail shutdown programs
- →Demolition crews working under noise-restricted council approvals
- →Infrastructure subcontractors on airport and port after-hours projects
What you receive
- ✓Editable DOCX template — Microsoft Word compatible
- ✓State-specific WHS legislation schedule (NSW/VIC/QLD/SA/WA/TAS/NT/ACT)
- ✓Hazard register with risk ratings + hierarchy-of-control mapping
- ✓Worker sign-on register, pre-start checklist, and incident escalation flow
Worked example
On a suburban arterial road resurfacing project running 20:00 to 05:00 under a council-approved night works permit, the shift supervisor opens the pre-start brief at 19:45 by walking the crew through this SWMS at the site office demountable. He points to the lighting plan, showing where the four 9-metre LED towers must be positioned to deliver 160 lux across the milling zone with no operator-blinding glare angles toward the traffic controller. The paver operator flags during sign-on that he worked a day shift the day before — the supervisor consults the fatigue control in the SWMS, reassigns him to spotter duties, and brings in the backup operator. Each worker initials the sign-on register acknowledging the noise curfew clause: rock breaking ceases at 23:00, only low-noise compaction continues after that. At 02:30, ambient temperature drops to 4°C and a worker reports numb fingers handling survey equipment; the supervisor pauses work, references the cold stress PPE clause, issues thermal liners from the site container, and logs the mid-shift control adjustment on the SWMS review page. The amended document is re-signed by affected workers before resuming. At shift end, the signed SWMS is filed in the project HSE register where it remains accessible for the regulator and retained for the statutory minimum period.
Related legislation
- WHS Act 2011 (model)
- WHS Regulation 2025
- Code of Practice — Hazardous Manual Tasks