The Public Transport Authority (PTA) reassured commuters early today that trains will come in as scheduled. David Hynes, spokesperson for the PTA, said Friday's incident will not be repeated.

“There's been no book offs that we're aware of, other than perhaps the normal one or two, so everything is running as normal as of today and we'll expect that to remain the case right through today and into this evening,” Hynes stressed.

Commuters were left stranded at train station when almost 100 train drivers called in sick on Friday. The train lines had to reduce the number of trains to two every hours and to cancel certain services.

The transport authority began an investigation into the incident. Drivers who called in sick Friday are now being asked to present evidences that they were ill.

Hynes said, “We have some relief from the industrial relations commission who have given us some powers to enforce that so even if there is some sort of issue we can absolutely minimise the impact on the public.”

The Australian Industrial Relations Commission (AIRC), through the Workplace Relations Act of 1996, requires employees to present documentary evidence “in relation to a period of sick leave taken (or to be taken) by the employee.”