Inspectors will visit up to 15 randomly-selected vineyards in the Tamar Valley and Coal River areas as part of the three-year Harvest Trail project.

Acting Fair Work Ombudsman Michael Campbell said that many farms across the country relied heavily on labour from overseas workers, in particular working holidaymakers and employees from non-English speaking backgrounds.

In August last year, the Fair Work Ombudsman began a national review of the wages and conditions of overseas workers in Australia on the 417 working holiday visa after it received allegations that some unscrupulous operators were exploiting backpackers.

"We are conscious many fruit pickers are young and overseas workers who may be vulnerable if they are not fully aware of their entitlements or reluctant to complain, so it’s important that we are proactive about ensuring they are paid correctly," Mr Campbell said.

Fair Work inspectors will talk to growers and labour-hire contractors about their obligations under federal workplace laws and encourage any employees with concerns to come forward.

Mr Campbell said that improving awareness of workplace laws was the main reason for the visits, but any non-compliance issues would need to be addressed.

He said ensuring that employers were aware of their obligation to have written agreements in place for workers paid piece rates was a key focus of the Harvest Trail program.

Earlier this year, Fair Work inspectors audited randomly-selected Tasmanian blueberry and strawberry farms in the North, North-West and South as part of the Harvest Trail campaign.

More information is available at www.fairwork.gov.au/harvesttrail or by calling the Fair Work Infoline on 13 13 94.