"In those communications it made clear that all employees would get paid this Friday for all work carried out until the pubs shut".
"When many businesses are undertaking great work to support the national effort, it's crucial that companies such as JD Wetherspoon and Sports Direct do all they can ensure their workers are properly protected and get the pay to which they are entitled".
The government has said it will pay 80% of salary for workers at firms such as Wetherspoon affected by Covid-19.
Tim Martin told 40,000 workers in a video that they should feel free to take jobs at retailers such as Tesco while Wetherspoon pubs remain closed.
Wetherspoon has since drawn up its own proposed rules on how the Government retention scheme could work, and has submitted these to ministers for approval.
Martin said: "We have had lots of calls from supermarkets, Tesco alone want 20,000 people to join them".
NHS worker Robert Good spotted the graffitied pub-front on Wednesday morning.
'If you're offered a job at a supermarket, many of you will want to do that.
"I don't think he is gaining any fans for what he has done, and I imagine other people will follow suit after they see the vandalism".
"I completely understand if you don't want to wait around for us to reopen but deeply appreciate your work".
The pub boss did say anyone who did go to work for a supermarket would be first in line to come back to work for Wetherspoons once the pandemic was over.
But Mr Martin fears there may be a delay in the wage subsidy becoming available.
"If you've worked for us before I promise you we will give you first preference if you want to come back", he said.
JD Wetherspoon has denied "abandoning workers in a time of need", after staff claimed they'd been told not to expect future payments until cash from the chancellor's wage scheme had been received.
He added: "They need to pay rent, buy food and because of the low wages he's always paid them will not have savings to depend upon".
He is ignoring the advice of the government to stand by your workers and instead abandoning them in their time of need.
"His selfish approach says unless the Government puts money into my bank account today he'll let the workers who have made him rich suffer".
Ian concluded: "It is completely unacceptable".
One employee added "Been working there for nine months, never missed a day or skipped a day".
'I've so much enjoyed talking to you in my pub crawls over the weeks and best of luck'.