The States will pay for the checks of all permanent and fixed term contract employees at an estimated cost of between £170,000 and £200,000.
A rolling programme of revalidation will then update the checks every three years.
Anyone whose work involves contact with children or vulnerable groups needs a disclosure and barring service check, formally known as a criminal records bureau check.
All staff working in relevant roles are being contacted to ensure they have an up to date certificate that meets new safeguarding procedures, or to offer them help in getting one.
The project is being run by Human Resources with assistance from a specialist company – GBG Online Disclosures .