Vendor Access Guidelines Vendor shall sign in and out all personnel with the Security Guard (or engineer on weekends) at the start and end of each work day. Vendor will be responsible for re-locking any areas made available for necessary access whenever that area(s) is unattended, and also when work or work hours are completed. Vendors are responsible for the security of their own job site at all times. Should the Vendor need to work on an overtime basis in an area that is open to the building and unsecured. The Vendor shall provide security through the landlord’s security agent and shall reimburse the landlord for such time that is utilized during the overtime period.  Whenever it is deemed necessary by the Building Engineer to temporarily issue any key to the Vendor, the Vendor will be responsible for controlling possession and use of it until returned daily to the issuing party.