Abstract: A safety post assembly includes a flat mounting plate adapted to rest on a support surface, an upright post fixed in an upstanding relationship on a central portion of the mounting plate, a pair of elongated narrow anchoring straps having inner portions positioned over a pair of peripheral edge portions of the mounting plate and outer portions extending outwardly from the inner portions and the mounting plate so as to overlie portions of the support surface located adjacent to the mounting plate, and a plurality of fasteners adapted to attach the mounting plate and anchoring straps upon the support surface. The mounting plate has a plurality of holes defined therein along peripheral edge portions of the plate and in spaced relationship to one another. The anchoring straps also have pluralities of openings defined therein, some being in a spaced relationship to one another which matches the spaced relationship between the holes in the mounting plate.