
It is a statutory obligation for an employee to have had written statement of employment particulars within two months of him/her starting work (which is where the letter making the job offer can come in). Both you as the employer and the employee are bound by these conditions, once they have been accepted.
The Business Wales website has comprehensive information on this subject. The areas covered are listed below. See Link. (Click onto Employment & Skills and follow the links.)
Subjects covered on the Business Web pages include:
Business Wales Sitebusiness.wales.gov.uk