Generally speaking, superannuation is preserved until you retire, this means it can’t be withdrawn until that time. However, some people may have part of their account classed as unrestricted non-preserved, this means it may be withdrawn at any time, and any restricted non-preserved portion may be withdrawn when employment is terminated. Your Statement will tell you if you have any non-preserved monies in your account.
In other limited circumstances you may be allowed to withdraw some of your preserved superannuation.