For construction worker Yogendra Tundre, life at a building site on the outskirts of the Indian capital New Delhi is hard enough. This year, record high temperatures are making it unbearable.

As India grapples with an unprecedented heat wave, the country's vast majority of poor workers, who generally work outdoors, are vulnerable to the scorching temperatures.

"There is too much heat and if we won't work, what will we eat? For a few days, we work and then we sit idle for a few days because of tiredness and heat," Tundre said.