hazards. These codes and hazards vary depending on the jurisdiction of the state or country. For a landlord to discharge their legal duty to check and maintain the rental property the tenant is required to allow the landlord "reasonable access" at reasonable times to carry out the repairs. What is "reasonable", however, is the subject of frequent disputes. A tenant may insist on giving the landlord access only by appointment, but they must be reasonable about scheduling appointments. To give an extreme example, since the landlord usually must schedule tradespeople during the normal working day, it is not reasonable for the tenant to insist that the plumber can only come in on Sunday evening. Plumbers, carpenters, painters, and other tradesmen sometimes operate on unpredictable or busy schedules, so if they fail to keep appointments, tenants are encouraged to document the missed appointment in writing to the landlord, in a letter or e-mail, and keep a copy. Because some landlords may use lack of access as an excuse, tenants are also encouraged to keep scheduled appointments and maintain a well-written record of their efforts to allow the landlord access to their property to make the desired repairs. Many leases give the landlord certain entry rights. For example, under Massachusetts General Laws, ch.186, §15B, a rental agreement may only provide for the following rights to access: to inspect the premises; to make repairs; to show the premises to a prospective tenant, purchaser, mortgagee, or its agent. The right of the landlord to enter if the tenant appears to have abandoned the premises sometimes causes a problem when tenants are moving out. The tenant may have moved out most of their furniture and intend to return to pick up the last few things and clean up the apartment before turning in the keys. Landlords believing the tenant has vacated the premises may come in ahead of the tenant, remove the remaining property, and attempt to charge the tenant for the "mess" they left. To avoid this situation, tenants are encouraged to be clear with landlords about plans to vacate and to do so in writing. In one documented case a tenant came back from his vacation and found someone else living in his apartment, with his furniture stored in the cellar. He wasn't behind on his rent, but he had been away for a while, and the landlord concluded that he had abandoned