What is labour?

physical and mental efforts made by humans in the production process with the purpose of monetary gain is called labour. For example, farmer doing farming for the purpose of selling the crop, carpenter making wooden goods for selling, teacher teaching in school to get salary is called labour

To convert raw material to final product humans play a major role, they put their physical and mental labour, their skills to convert raw material to a final product. Like a tailor uses his skill and physical labour to make a wearable dress out of cloth, he is doing this activity with a purpose to make money. Labour is people's effort in a production process to make money.