Once the YouTuber links Google AdSense to their channel, they make 68% of the ad revenue (see Google AdSense Revenue Share). YouTube charges advertisers when a viewer watches 30 seconds or more of the ad, and typically charges around $.18 per view (see How Much Do Ads on YouTube Cost).
No credit is given for periods of nonpay status and time off the rolls, except under the following conditions: (A) Credit is given for the first 30 calendar days of each period of nonpay status on the rolls during full-time employment, or during part-time employment on or after July 1, 1962. On this same basis, a seasonal employee receives credit for the first 30 calendar days of each period of nonduty/nonpay status.
HR: Employee Handbook: Appointment Types. As a Smithsonian employee, you received either a Federal or a Smithsonian Trust Fund appointment. Individuals appointed to Federal positions are paid from the Smithsonian's annual Federal appropriation. Types of Federal appointments are career, career conditional, term, temporary not to exceed one year, temporary pending the establishment of a register (TAPER), and status quo.