WORKERS on Hobart's $100 million Parliament Square development have been exposed to asbestos, Tasmania's workplace safety watchdog has found.
Worksafe Tasmania has written to three workers concerned about how asbestos was removed from the site, which is behind Parliament House.
Investigations are continuing but Worksafe has told the workers it wanted to inform them of the finding as early as possible.
"The workers concerned were anxious to receive advice on the issue as soon as possible and they have now been notified of this conclusion," a Worksafe spokeswoman said.
"The investigation is ongoing and has revealed a number of issues that require further examination."
Union members protested at the site yesterday, calling on developer Citta to meet with them.
"Citta Property Group have a moral responsibility to these workers for failing to provide them with a safe workplace," Unions Tasmania secretary Kevin Harkins said.
A spokesman for Citta said the issue was one for demolition contractor Macquarie Builders.
"Citta hasn't been directly involved in this issue and doesn't have details about the Worksafe investigation," the spokesman said.