National Cubicle Day is observed on April 28 each year in the United States to appreciate the cubicle, an innovation designed by Robert Propst that transformed workplace environments. This holiday celebrates the introduction of the cubicle, which provides office workers with individual and private spaces, enhancing productivity by reducing physical distractions. Employees often participate in activities such as beautifying their cubicles, with some competing to create the best Feng Shui layouts. The day has evolved over time, gaining popularity and encouraging various exciting customs and events among workers. The cubicle, first released as "Action Office II" by Herman Miller, has become a standard in office design, reflecting the changing demands of the workplace.