Abstract: A base (2) for a floor mat (1) is composed of a plurality of components that are releasably-secured together to define at least one recess, for receiving matting material (3), and a ramp-like edge (4) that inclines upwardly from the level of the floor surface to the level of the upper surface of the mat. In some embodiments, the ramp-like edge may extend without interruption around the entire periphery of the base. In other embodiments, in which the base is generally rectangular, the ramp-like edge may extend without interruption along only two opposed sides of the base. Advantageously, the height of the walls of the/each recess is such that the tops of the walls are at the level of the upper surface of the mat.