The Dual labour market theory divides the economy into two parts, called the "primary" and "secondary" sectors. Workers in the primary sectors are highly skilled and enjoy high wages, good benefits, and employment security, and they are often unionized. Workers in the secondary sectors are low skilled or even unskilled, have low wages, high turnover, job insecurity, and little chance of promotion. The model is also reflected in organizations when they operate with a small Core Labour Force and a Peripheral Labour Force