The Fair Work Ombudsman (FWO) dropped its landmark case against the Maritime Union of Australia (MUA) and seven crew members of the Tandara Spirit on May 15.
The case related to alleged breaches of the Fair Work Act when the MUA and the seafarers failed to comply with orders from the Fair Work Commission in late 2014.
MUA national secretary Paddy Crumlin said the FWO pulled its investigation after wasting the time and resources of the union and putting the workers through unacceptable stress and anxiety.