Regulation 8 Requirement for an accession State national subject to worker authorisation to be authorised to work
An accession State national subject to worker authorisation shall only be authorised to work in the United Kingdom during the accession period if he holds an accession worker authorisation document and is working in accordance with the conditions set out in that document.
For the purpose of these Regulations, an accession worker authorisation document means—
a passport or other travel document endorsed before 1st July 2013 to show that the holder has leave to enter or remain in the United Kingdom under the 1971 Act, subject to a condition restricting his employment in the United Kingdom to a particular employer or category of employment; or
a worker authorisation registration certificate endorsed with a condition restricting the holder's employment to a particular employer and authorised category of employment.
In the case of a document mentioned in paragraph (2)(a), the document ceases to be a valid accession worker authorisation document at the point at which—
the period of leave to enter or remain expires; or
the document holder ceases working for the employer, or in the employment, specified in the document for a period of time that exceeds 30 days in total.
In the case of a document mentioned in paragraph (2)(b), the document ceases to be a valid accession worker authorisation document at the point at which—
the document expires;
the document holder ceases working for the employer, or in the authorised category of employment, specified in the document for a period of time that exceeds 30 days in total; or
the document is revoked.
For the purposes of this regulation, and regulations 9 and 11, the reference to a travel document other than a passport is a reference to a document which relates to a Croatian national and which can serve the same purpose as a passport.