A head harness for use by hunters who are already secured by a torso-type safety harness when sitting in a tree stand. The head harness comprises a headband or headband-incorporating cap worn by the hunter, a connector at the rear of the headband, and a receiver secured to the tree at a height corresponding to the hunters head when sitting in the tree stand. The receiver and connector are configured to mate, with a connection that resists the nodding motion of the hunters head if the hunter begins falling asleep, thereby helping to prevent falls from the tree stand that would be initiated in the direction of the nodding head.