A ladder tie off system incorporates a safety strap into a ladder for securing the ladder to prevent undesired tipping. The system includes a ladder having a pair of lateral side members and a plurality of rungs extending between the lateral side members. A extendable tether includes a tensioning mechanism, a fixed section, and an extendable section. A mount is coupled to the tensioning mechanism of the extendable tether. The mount is coupled to the ladder proximate a top end of the ladder wherein the extendable tether is configured for is secured to a static object near the top of the ladder whereby the ladder is inhibited from tipping during use.