Abstract: A post support for a safety railing used in building construction comprises a hollow post socket having an open top and a through bore extending horizontally therethrough. An anchor is received within the post socket. There is a bar received through the bore of the post socket. The bar intersects with the anchor and restricts movement of the anchor relative to the post socket.

Abstract: A method of installing a safety railing in a building under construction by providing post supports comprising open-topped post sockets on socket supports, mounting the post sockets on a concrete floor formwork with the post sockets spaced above the concrete floor formwork by the socket supports and casting concrete to form a concrete floor on the concrete floor formwork and thereby embedding the post supports in the concrete floor with the concrete extending beneath the post sockets. The lower ends of posts are then inserted into the post sockets to support the posts above the concrete floor and rails are supported on the posts.