Underemployment exists when a person’s employment is inadequate in relation to alternative employment, account being taken of his\her occupational skills. The underemployed persons are classified into two groups:1. Visible Underemployment: which refers to insufficient volume of employment :Persons worked less than 35 hours during the reference week or worked less than the normal hours of work in their occupation were considered as visibly underemployed.2. Invisible Underemployment: refers to a misapplication of labour resources or fundamental imbalance as between labour and other factors of production, such as insufficient income.