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Surname Working (Working , 沃金 , ทำงาน) , globally, is a rare cognomen. The surname Working is characteristic of Oman, where it is a rare surname, the United States, and Belgium, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in the United States, Indonesia, and Egypt. Much less frequently, Working is the forename as well as the last name.