white-collared
/ˌwʌɪtˈkɒləd/adjective
1Of an animal: having a band of white hairs or feathers on the neck.
2Wearing a white collar.
3Of a person: employed in non-manual work, especially office work of an administrative, managerial, or clerical nature.
Origin
Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer. From white + collared.