PROBLEM TO BE SOLVED : To makes it unnecessary for a tenant to pledge a deposit to lessor and to cancel a lease agreement to the lessor when the tenant stops continuous payment of rent regarding the lease agreement of an office.SOLUTION : An office deposit compensation mechanism 1 is interposed in conclusion of real estate lease agreement between an office property owner 2 and the tenant 3. At this time, the tenant 3 pays compensation money equal to or less than for one month and restitution costs to the office deposit compensation mechanism 1. When the tenant 3 falls behind payment of the rent, the office deposit compensation mechanism 1 pays the rent fallen behind to the office property owner 2 and performs from a call to contact cancellation procedures, restitution measures in place of the office property owner 2.COPYRIGHT : (C)2008, JPO&INPIT