The letter seeks their "assistance in recognising the valuable role that the food production supply chain is doing by providing high quality food to front line workers and the Scottish population, during this unprecedented time."
Adding that: "It is more critical than ever that food can still be grown, reared, caught, produced, processed, distributed and sold through local and national retailers, online, as well as delivered directly to hospitals and vulnerable groups."
Highlighting recent positive public messages of support for food production from the Scottish and UK Governments the eight signatories go on to say: "Scotland's food and drink industry has taken this emergency seriously and we want to make sure you know the measures of good practice that we have recommended to our members and stakeholders.
"We are proud of how workers across Scotland have risen to the many challenges that they face as a result of Covid-19.
"We hope you have the opportunity to recognise frontline workers and the many unsung heroes in support industries, including the Scottish food supply chain."
READ the full letter by clicking here.