Senior Administrative Assistants help senior managers and high-level executives maximize their efficiency by providing them with clerical and secretarial support. They keep these managers and executives organized by taking care of their travel arrangements, scheduling their meetings and other tasks that will be discussed in this article. When it comes to work environment, Senior Administrative Assistants spend the day in a standard office environment. Pretty much every industry employs Senior Administrative Assistants, but they are mostly found at midsize and large corporations that have several senior managers and executives on staff.