Malta OHSA Administrative Instrument No. 2 of 2025 (in force 2025-07-23), under the Health and Safety at Work Act (Cap. 646). Applies to construction work in direct sunlight only. Standing baseline duties apply at all times (hydration stations, cool-down hydration breaks, UV shelters, high-SPF sunscreen, light clothing — shirtless work prohibited). When ambient temperature reaches or exceeds 40°C as officially reported by the Met Office at Malta International Airport, the project supervisor must reassess site conditions; possible (not automatic) outcomes include partial or temporary suspension of works in direct sunlight.
No standalone formula is published for this standard; see programmable logic and parameters below.
Governing metric: Ambient dry-bulb air temperature (°C), official Met Office (Luqa) reading — construction only
| Parameter | Value |
|---|---|
triggerThresholdC | 40 |
Programmable logic: Applies to construction work; if industry is provided and is not 'construction', not applicable. Below 40°C: standing baseline duties (water, cool-down breaks, shade, sunscreen, no shirtless work). At or above 40°C (§6.3): mandatory supervisor reassessment with measures that MAY include shaded rest, increased hydration breaks, rescheduling, or partial/temporary suspension of works in direct sunlight. This is discretionary supervisor-led escalation — NOT an automatic stop-work flag at exactly 40°C.
Required inputs: none
Optional inputs: airTempC, industry, outdoor