κάρτα εργασίας → work card
ψηφιακή κάρτα εργασίας → digital work card
A work card is like an Identity Card which verifies that a person has been given work, or is eligible to perform work in a given profession or jurisdiction. The work card is not a work visa, although it may be used in conjunction with a work visa, permanent resident card or other documentation.
Work card - Wikipedia