Definition of work card in US English:

work card

noun

  • 1A card issued by an employer as proof that the cardholder is employed; (also in later use) a card certifying that the bearer has permission to work.

  • 2A card on which is printed a list of exercises for students, such as questions to be answered or tasks to be carried out.

Origin

Late 19th century; earliest use found in The Manchester Guardian.