The city council may not hire the financially dependent child of a council member. A common financial interest shared by a council member and another person, in this case a child, may give the council member a prohibited interest in the child’s income. Because the council member and the child live in the same household, the parent and child are not financially independent, and the child may not be employed by the city, pursuant to Section 109, Miss. Const. of 1890, and Section 25-4-105(2), Miss. Code of 1972.