Schedule V of the Québec Règlement sur la santé et la sécurité du travail sets permissible heat-exposure limit values in °C WBGT for three metabolic workload categories and four hourly work/rest regimens. Sections 121-124 attach a measurement/record duty, a medical-supervision and water/shower duty, and an ordered three-step control hierarchy to exposures at or above the continuous-work curve.
No standalone formula is published for this standard; see programmable logic and parameters below.
| WBGT (°C) | Light 180 W | Moderate 300 W | Heavy 415 W | Very heavy 520 W |
|---|---|---|---|---|
| 24 | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr |
| 25 | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr |
| 26 | 60 / 0 min work/rest per hr | 60 / 0 min work/rest per hr | 30 / 30 min work/rest per hr | 30 / 30 min work/rest per hr |
| 27 | 60 / 0 min work/rest per hr | 45 / 15 min work/rest per hr | 30 / 30 min work/rest per hr | 30 / 30 min work/rest per hr |
| 28 | 60 / 0 min work/rest per hr | 45 / 15 min work/rest per hr | 15 / 45 min work/rest per hr | 15 / 45 min work/rest per hr |
| 29 | 60 / 0 min work/rest per hr | 30 / 30 min work/rest per hr | 15 / 45 min work/rest per hr | 15 / 45 min work/rest per hr |
| 30 | 60 / 0 min work/rest per hr | 15 / 45 min work/rest per hr | 15 / 45 min work/rest per hr | 15 / 45 min work/rest per hr |
| 31 | 30 / 30 min work/rest per hr | 15 / 45 min work/rest per hr | WBGT 31°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 31°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
| 32 | 15 / 45 min work/rest per hr | WBGT 32°C is above every Schedule V Table 1 row for moderate work (highest row 31.1°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (258 kcal/h). | WBGT 32°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 32°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
| 33 | WBGT 33°C is above every Schedule V Table 1 row for light work (highest row 32.2°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (155 kcal/h). | WBGT 33°C is above every Schedule V Table 1 row for moderate work (highest row 31.1°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (258 kcal/h). | WBGT 33°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 33°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
| 34 | WBGT 34°C is above every Schedule V Table 1 row for light work (highest row 32.2°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (155 kcal/h). | WBGT 34°C is above every Schedule V Table 1 row for moderate work (highest row 31.1°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (258 kcal/h). | WBGT 34°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 34°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
| 35 | WBGT 35°C is above every Schedule V Table 1 row for light work (highest row 32.2°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (155 kcal/h). | WBGT 35°C is above every Schedule V Table 1 row for moderate work (highest row 31.1°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (258 kcal/h). | WBGT 35°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 35°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
| 36 | WBGT 36°C is above every Schedule V Table 1 row for light work (highest row 32.2°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (155 kcal/h). | WBGT 36°C is above every Schedule V Table 1 row for moderate work (highest row 31.1°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (258 kcal/h). | WBGT 36°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (357 kcal/h). | WBGT 36°C is above every Schedule V Table 1 row for heavy work (highest row 30°C). Schedule V permits exposure above Table 1 only where the worker is under medical supervision AND it is established that the worker's tolerance for working in heat is greater than average. The regulation prescribes no work/rest ratio here and does NOT order work to cease, so no stop-work is reported and no 0/60 row is invented. The general employer duty of care under the Loi sur la santé et la sécurité du travail continues to apply. Workload band selected from the supplied metabolic rate (447 kcal/h). |
This standard's declared inputs do not include acclimatization status, so results do not vary by it.
Required inputs: wbgtC, workload
Optional inputs: metabolicRateW, employerSize