"Business" includes all activities engaged in or caused to be engaged in within this City with the object of gain, benefit or advantage, whether direct or indirect, to the taxpayer or to another or to others, but does not include the services rendered by an employee to their employer or a casual or isolated transaction. Although an activity of a taxpayer may be incidental to another or other of their business activities, each such activity shall be considered to be business engaged in within the meaning of this chapter. (Ord. 5017-NS § I (part), 1977)