The Thermal Work Limit is a heat stress index, used as a guideline to determine appropriate work-level activity depending on thermal risk. calculated levels of heat that can be dissipated by a workers body into the environment.
Most GCC states do have some temperature guidelines in place. Each has imposed some variety of a midday work bans in the summer. However, these summer working hours are arbitrary, based on pre-determined dates and times rather than actual weather conditions. They also tend to be under-enforced, though companies are meant to face fines and visa penalties for every employee caught working during the ban. Good practices by private companies and industrial zones exist throughout the Gulf, but they should made mandatory.
Additionally, migrant are often forced to rest on-site (as overseers state transportation to often distant migrant labor camps is time-consuming), and are not always provided with shaded areas. The “break” workers receive is consequently not much of a break at all, as they remain exhausted while working through the evening.
Heat risk for low-income expats is exacerbated by poor housing conditions that do not shelter them from heat during off-hours and disable their recovery. Critically, the TWL and other heat stress measures assume workers are fit for duty, adequately rested and hydrated and able to self pace their work. However, many such personal factors are often beyond the control of laborers.