A spike in Covid-19 cases has resulted in 40 workers at the DVLA in Swansea having to self-isolate.
Staff at the agency’s call centre in Swansea Vale were given the warning through the NHS track and trace app over coronavirus.
The situation has led to concerns being voiced by some workers.
They claim that stair and door rails are not being cleaned properly and that hand sanitisers are not being refilled - leading to them bringing in their own anti-bacterial wipes.
But a DVLA spokeswoman insisted the proper precautions are being taken and that it takes the health and safety of its staff incredibly seriously.
A staff member claimed: “Since Tuesday in one area of the call centre in Swansea Vale around 40 had track and trace isolating notifications.
“There have been a number of positive cases with some staff seriously ill. They are calling in the vulnerable staff that work from home to fill the gaps.
“There is still no interim cleaning of doors and stair rails and hand sanitisers are not refilled. Most staff have their own wipes and anti-bac at their desks.
"There are work zones in place but within the zones there is hot desking. Always maximising staff levels and cramming too many in.
“The Contact Centre in Swansea Vale has a lack of interim cleaning and the cleaners use the same cloths for all desks at the end of shift.”
All the claims were put to the DVLA, which insisted that extra cleaning is taking place between shifts and includes door handles, handrails, toilets, lift buttons and turnstiles.
They also said there was spare hand sanitiser solution in place at the site.
A DVLA spokeswoman said: “The safety of our staff is our top priority.
“The government guidelines are clear - where a person is alerted by track and trace that they have been in close contact with someone who has tested positive, they must self-isolate for 14 days.
“We regularly remind staff of this requirement.
“We have extensive safety measures in place across our estate in accordance with government advice and continue to work closely with local health and safety teams and Public Health Wales.”
She added that a series of measures to ensure the office environment had been put in place - such as Perspex screens, staggered shift times and the wearing of face coverings.
