A Pakistani labourer carries sacks of rice at a market in Karachi on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / RIZWAN TABASSUM

A Pakistani labourer works on a roadside digging soil in Karachi on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / RIZWAN TABASSUM

Indian labourers walk as they plucked tea leaves at a plantation in Ghandigram on the outskirts of Agartala on April 30, 2019, on the eve of International Labour Day celebrated on May 1. / AFP / STR

Indian labourers fill sacks with wheat grain to weigh them at a local distribution point on the outskirts of Amritsar on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / NARINDER NANU

Indian labourers use shovels to separate wheat grains from the husk at a local distribution point on the outskirts of Amritsar on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / NARINDER NANU

An Indian labourer uses a shovel to separate wheat grains from the husk at a local distribution point on the outskirts of Amritsar on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / NARINDER NANU

Pakistani laborers carry sacks at a market in Lahore, Pakistan, Tuesday, April 30, 2019. Pakistan will observe the Labor Day on Wednesday along with other nations worldwide. (AP Photo/K.M. Chaudary)

A Pakistani labourer pulls a loaded cart on a street in Karachi on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / RIZWAN TABASSUM

Indian labourers load sacks of wheat grain onto a trailer at a local distribution point on the outskirts of Amritsar on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / NARINDER NANU

Pakistani laborers unload bananas at a fruit market in Peshawar, Pakistan, Tuesday, April 30, 2019. Pakistan will observe the Labor Day on Wednesday along with other nations worldwide. (AP Photo/Muhammad Sajjad)

An Indian labourer plucks tea leaves at a plantation in Ghandigram on the outskirts of Agartala on April 30, 2019, on the eve of International Labour Day celebrated on May 1. / AFP / STR

Indian labourers unload wheat grain from a trailer at a local distribution point on the outskirts of Amritsar on April 30, 2019, on the eve of the International Labour Day celebrated on May 1. / AFP / NARINDER NANU