Abingdon Tesco Extra remains closed today due to flooding.
The store, one of the supermarket giant's largest in the country, closed on Monday afternoon after the River Ock burst its banks.
The Tesco Extra store off Marcham Road was built on a flood plain and has been forced to close for the fourth time in two years because flood water has filled its large car park.
READ MORE: Major Oxford road closed due to flooding
Staff turned up for work yesterday, wading through water to get to the store entrance and they were there again today.
It is understood they can opt for a day's holiday when the store is closed but if they don't turn up for work they won't get paid.
The store's car park was flooded in April last year, and in January and September this year, losing several day's of trading as a result.
A worker heading into the store today added: "The car park is still completely flooded - the rain overnight hasn't helped - we're still shut."
A Tesco spokesman said earlier: "We are sorry for the inconvenience caused by the temporary closure of our Abingdon Extra store.
"This is due to the recent heavy rainfall and flood water in the carpark.
"We are working with our maintenance team to reopen the store as soon as possible.”
Other supermarkets in the town expect to be extra busy as a result of Tesco's closure.
The Environment Agency issued a flood warning for the River Ock and Caldecott yesterday, saying homes in the area could be flooded.
Homes in the Chaunterell Way area of south Abingdon flooded in January and September and appear to be surrounded again with flood water.
The Environment Agency removed flood barriers once tested to protect homes in the area, and there is no flood plan in place for the town.
Oxford West and Abingdon MP Layla Moran has raised her concerns several times in the Commons and urged the agency to send staff to support residents.
She said she has been told EA staff could not be sent because they had not been properly trained to deal with residents' anger.
Ms Moran has lobbied the government for a change in the funding formula so that smaller communities as well as cities can be better protected from flooding.
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Andy is the Trade and Tourism reporter for the Oxford Mail and you can sign up to his newsletters for free here.
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