Sex workers felt left out of the process when Tasmania's sex industry legislation was developed in 2004, and are hoping an evalutation now under way will address their concerns, according to national sex workers association, the Scarlet Alliance.

The Government has engaged a private consultant to carry out an evaluation of the Sex Industry Offences Act 2005, and a report is expected to be handed to Government in coming weeks.

The legislation, developed under the direction of former Attorney-General Judy Jackson, was initially designed to regulate the sex industry, requiring brothels to register as businesses and follow proper business practices.

Opposition to the bill in the Upper House, however, led to a new bill being introduced, which made brothels illegal.

Scarlet Alliance project officer Alina Thomas said that sex workers had continually felt left out and should be more involved in the developing and reviewing of sex industry legislation.

"It (should not be) something that happens in the corridors of power and is really removed from the people who are affected," she said.

"Sex workers need to be involved in it and that's one of the things that was missing when the legislation was originally implimented."

Ms Thhomas said that when the Act was proclaimed there was uncertainty among sex workers about what it meant for them.

She said any evaluation of the legislation should involve a follow-up with sex workers to ensure they understand both the legislation and the evaluation process.

Other methods to help sex workers understand the legislation should also be explored, Ms Thomas said, including the possibility of appointing sex worker liaison officers within the police force.

"There was a push for that a few years ago but it was not done properly or formally," she said.

Ms Thomas said that the absence of sex worker liaison officers made it difficult to find police officers suitably qualified to answer questions relating to the legislation.