According to the International Labour Organization (ILO) report, working on a warmer planet: The impact of heat stress on labour productivity and decent work, globally two sectors projected to be hit worst are agriculture and construction, with agriculture worse affected.  

• The ILO says 940 million people around the world work in the agricultural sector, which is projected to account for 60% of working hours lost due to heat stress by 2030.  
• In construction, an estimated 19% of global working hours are likely to be lost. 

Source: The Hindu