While it is an important concept, it has not been used widely by the treaty bodies. For example, although as we have seen much emphasis is placed on the importance of equal pay for work of equal value for women and men, it is rarely made explicit that women’s pay should be increased to that of men. In recent decades, there has been strong opposition to such restrictions on the grounds that they breach the equality principle. However, this has led to two quite contradictory responses. The CEDAW Committee has encouraged Austria to ensure ‘levelling up' measures are included in its anti-discrimination legislation; CEDAW Committee, Austria, op.