Abstract: A ladder lateral extension, adapted for use with a conventional ladder, includes a generally channel-shaped member adapted to be placed on the siderail of a ladder, such that the siderail fits within the channel-shaped member. The channel-shaped member has opposite interior and exterior sidewalls and a base. A pair of rung-receiving slots are formed in the exterior sidewall, which slots receive the rungs as the channel-shaped member is placed over the siderail. Extending perpendicularly outwardly from the exterior sidewall is a lateral support member of a length equal to or greater than the distance between the rung-receiving slots, thus providing a safe standing area. Safety for the user of the lateral ladder extension is thus greatly increased, due to the engagement of two rungs of the ladder and the length of the lateral support member, which allows the user to safely stand upon it.