The invention is a combination mobile tool caddy and seat for performing work adapted for use by a tradesman such as an electrician, plumber, carpenter and the like. The wheeled mobile caddy includes a rigid frame having a lower and an upper support member vertically separated by upright corner members. The lower support member extends beyond the upper support member to form a platform area upon which a cylindrical vessel or bucket can be stored. The bucket is equipped with a liner having pockets for storing hand tools. Four caster wheels are appropriately attached to the lower support member so that the caddy can be wheeled from a service vehicle to a specific job site having stored therein the tradesman's tools, as well as necessary material supplies to perform daily job functions.