A beggar, a thief, a smuggler and a gambler can not be termed as worker because they are not contributing to gross domestic product. When a farmer works on fields, he produces food grains and raw materials for industries. Cotton becomes cloth in textile mills and in powerlooms. Lorries transport goods from are place to another. The total money value of all such goods and services produced in a country in a year in called its gross domestic product. Hence the activities of thief, beggar, smuggler and a gambler are not producing anything and also not contributing to the gross domestic product of the country. So they are not workers.