The deadline for EU, EEA and Swiss citizens (and their families) living in the UK at 31 December 2021 to apply for EU Settlement scheme has now passed (30 June 2021).
It may not be too late
However if any employees who have missed the deadline still wish to apply for a valid immigration status they can do so, and it may be accepted where there are reasonable grounds.
Examples of reasonable grounds would include a medical reason, or they were a victim of domestic abuse.
For further details of the scheme and how to apply go here.