Hi there,
Do you mean you were put on "stand-down"?
Stand-down can only be used by employers to send employees home without pay when there is no work due to circumstances out of their control such as industrial action (strikes), natural disaster or unavoidable/ unforeseeable major equipment breakdown (not routine maintenance).
Therefore it is very odd that you have been stood down for 24 months. Before you were stood down, were you a full time or part time permanent employee or were you casual or a contractor?
Also, have you received any pay from this company during the stand-down period?
If your employer had no work for you (and you were a permanent employee) then they should have given you a redundancy package. How long have you been employed by this company?