Protecting Tasmanian workers from the harmful effects of second-hand tobacco smoke will be easier from today, with the launch of a new resource to help workplaces go smoke-free.

The Minister for Health, Michelle O'Byrne, launched Going Smoke-free: your workplace kit today at the Cascades Female Factory.

Ms O'Byrne said that the kit had been piloted at Tasmanian worksites, including the Port Arthur Historic Site, which went totally smoke-free for workers and visitors last year.

"The Female Factory has announced today that it will follow suit - from 1 July, all buildings and grounds of the World-Heritage-listed site will be smoke-free."

Ms O'Byrne said while most indoor workplaces were already smoke-free, smoking was still too common in outside workplaces and some semi-inside workplaces like sheds and garages.

"If employees are exposed to environmental tobacco smoke at work, either inside or outside, their workplace is not safe," she said.

"The World Health Organisation has stated there is no safe level of exposure to tobacco smoke.

"Going smoke-free helps employers meet their legal responsibilities to protect people at or near workplaces from risks to health and safety."

Ms O'Byrne said going smoke-free in the workplace is one of the most important things employers can do to protect the health of employees, and is widely accepted by the community.

"Research shows 82 per cent of Australians support measures to ban smoking in the workplace.

"It's also good for business, because the health of your business depends on the health of your employees."

Ms O'Byrne said that the highly addictive nature of tobacco smoking made it important for employers to consider the needs of smokers when making the change.

"As well as restricting or banning smoking in the workplace, it's important that smokers are supported to adjust to the change.

"Going Smoke-free: your workplace kit is full of information covering the benefits of reducing smoking in the workplace, legal responsibilities, communication and signage, and how to support employees to reduce or quit smoking."

The kit also includes case studies showing how other Tasmanian workplaces have gone smoke-free, and easy-to-use templates that minimise the effort involved.

Going Smoke-Free: Your workplace kit is freely available online at www.dhhs.tas.gov.au/peh/smoke-free_workplace