You can either:
- check the applicant’s original documents
- check the applicant’s right to work online, if they’ve given you their share code
You could face a civil penalty if you employ an illegal worker and have not carried out a correct right to work check.
There will be no change to the rights and status of EU citizens currently living in the UK until 30 June 2021, or 31 December 2020 if the UK leaves the EU without a deal.