The Tasmanian Government has suspended all greyhound and horse racing meets and trials, effective immediately, while a decision on greater retail restrictions is likely to be made on Friday.
Garage sales and sex work will also be prohibited from 6pm Friday, while the recreational scalloping season - scheduled to start this weekend - has been postponed due to the risk of large numbers of people travelling to coastal communities.
Premier Peter Gutwein announced the latest restrictions at a press conference on Thursday, with the measures regarding racing designed to prevent large numbers of people travelling to regional and rural communities.
"Race meetings draw people from all over the state, many of them that live in regional and rural Tasmania," he said.
"What we don't want to do is to increase the risk to those rural and regional communities, nor to increase the risk to a group of people ... coming together at one location as they have been."
Tonight's race meet at Elwick has been cancelled, while TAB and UBet stores will be closed from 6pm Friday. Training facilities can remain open.
Racing Minister Jane Howlett said those in the industry could be entitled to support packages.
"The Premier and I have spoken with Tasracing about this decision and a support package will be announced in the coming days that will assist industry participants and maintain the welfare of our racing animals," she said.
"Many industry participants will also be eligible for the assistance packages for businesses and individuals already announced by the Tasmanian and Australian governments over recent weeks."
Farmers markets can continue to operate, but only for the sale of fresh food and produce that can be consumed within the home. Food vans will no longer be able to attend farmers markets.
Mr Gutwein said this was to prevent people from congregating at the same place for a protracted period of time.
Premiers and chief ministers will meet on Friday to discuss restrictions on retail premises, but Mr Gutwein again ruled out a statewide shutdown due to the economic damage it could cause, and the uncertainty around when it would be lifted once imposed.