Taxi drivers risk losing their livelihood without emergency support to get around strict rules on self-isolation, Scottish Labour leader Richard Leonard warned.
He claimed cabbies cannot rely on the existing £500 package for low-income people in Scotland who have to stop going to work after exposure to coronavirus.
Leonard wants the SNP Government to follow Northern Ireland by offering a £1500 grant.
He told Scottish finance secretary Kate Forbes: "Taxi and private hire drivers who have picked up Covid-19 positive patients from hospitals have subsequently been contacted by Test and Protect and told to self-isolate."
Leonard added: "However, because they are not in receipt of Universal Credit or legacy benefits, they are ineligible for the £500 self-isolation support grant.
"Given that they have substantial outgoings including costs for their vehicles, licence and other associated costs, as well as living expenses, they cannot afford to self-isolate as there is so little financial support available to them."
The calls for more financial aid were backed by Chris Elder, a taxi driver from Dundee.
In a statement released by Labour, he said: "Cabbies have been the unsung heroes of this pandemic but have been forgotten about by the Scottish and UK Governments. Many of my colleagues placed themselves at real risk earlier this year so we could get desperately ill people to where they needed to be.
"We'd do the same again if it was needed but it's not right that cabbies are excluded from support going to other businesses."
Leonard also told UK Chancellor Rishi Sunak to look again at rules on financial support because taxi drivers do not have rateable premises or always operate business bank accounts.
Leonard said: "As a result, many have fallen into debt and face the prospect of losing their livelihoods unless rules governing existing schemes are changed to accommodate them – or new tailored support packages are developed to help sustain this industry and these jobs."
