See Fair Work Act s.524–525
An employer may stand down an employee during a period in which the employee cannot usefully be employed because of a number of circumstances including:
If an employer stands down an employee during a period in accordance with s.524 of the Fair Work Act then the employer is not required to make payments to the employee for that period.
Section 524 is intended to relieve an employer of the obligation to pay wages to employees who cannot be usefully employed in certain limited circumstances. The consequences of a stand down can be severe for an employee as the employee may be deprived of wages for a lengthy period. Whether a particular employee can be usefully employed is a question of fact to be determined having regard to the circumstances that face the employer.
An employer may not stand down an employee under s.524 of the Fair Work Act if:
Note: An enterprise agreement or a contract of employment may also include terms that impose additional requirements that an employer must meet before standing down an employee (for example requirements relating to consultation or notice).
If the terms of an enterprise agreement or contract of employment provide for the standing down of employees, then the employer will generally need to rely upon the terms of the enterprise agreement or contract of employment to effect a stand down of an employee.
An employee is not taken to be stood down during a period when the employee:
Note: An employee may take paid or unpaid leave (for example, annual leave) during all or part of a period during which the employee would otherwise be stood down.
 Communications, Electrical, Electronic, Energy, Information, Postal, Plumbing and Allied Services Union of Australia & Anor v FMP Group (Australia) Pty Ltd  FWC 2554 (Gostencnik DP, 26 April 2013) at para. 31.
 ibid., at para. 17.
 Fair Work Act s.525.