How to celebrate Administrative Professionals Day in 2021 SUBSCRIBE Administrative professionals keep businesses running. Without them, day-to-day work would be significantly more challenging. Administrative Professionals Day offers the perfect opportunity to acknowledge the work of office assistants, secretaries, and other administrative support professionals. With their vast array of skills and knowledge about the company, they consistently help the organization and its people operate effectively. The holiday debuted in 1952 as National Secretaries Day. The name switched in 2000 to better reflect the changing job titles and expanded responsibilities of the modern administrative workforce. Administrative Professionals Day is observed annually on the Wednesday of the last full week of April.