See Fair Work Act 2009 s.404 and Fair Work Commission Rules rule 55
Security for costs is when the Fair Work Commission orders that one party pay an amount to be held in trust before a matter proceeds to a hearing. Until the amount ordered is paid, the matter will be adjourned.
Section 404 of the Fair Work Act allows the Commission, through its Rules, to provide for security of costs. Rule 55 sets out the relevant rules.