As corporations have come to dominate the economy, the practical scope the corporations power has increased. For example, in 2005 the Commonwealth Parliament enacted the "WorkChoices" legislation, which, relying primarily on the corporations power, seeks to create a uniform national industrial relations system to the exclusion of both the States' and the Commonwealth's own industrial relations systems. Previous systems were based on the 'conciliation and arbitration' power. The new legislation applies to all employees of a "constitutional corporation." A constitutional corporation is a corporation within the meaning of section 51(xx) of the Constitution. The legislation also applies to employees of the Commonwealth and its agencies, and some others. The expected coverage of this law is approximately 85% of the Australian workforce. That proportion is likely to increase as employers who operate as sole traders or in partnerships incorporate to take advantage of the new legislation's relatively "employer-friendly" provisions.