Artikel 5

1. If a person in receipt of an invalidity benefit is residing or staying in the territory of a Contracting Party, other than the competent State, administrative checks and medical examinations shall be carried out, at the request of the competent insurance institution, by the insurance institution of the place of stay or residence of the recipient.
2. If it is established that the recipient referred to in paragraph 1 of this Article is employed or has means in excess of the prescribed limit while receiving benefits, the insurance institution of the place of stay or residence shall send a report to the insurance institution which has requested the check or examination. This report shall indicate in particular the nature of the employment, the amount of earnings or means which the person concerned has had during a reference period to be determinated by the competent insurance institution and, where appropriate, the opinion of a medical expert on the state of health of the person concerned.
3. The costs of the medical examinations, shall be borne by the insurance institution which has carried out the examination.