Thirty days’ notice in writing is necessary to be given by either party before he or she can terminate a tenancy at will, or from one period to another of three months or less; but where in any case rent is reserved payable at intervals of less than thirty days, the length of notice need not be greater than such interval between the days of payment: Provided, however, That when premises are furnished or let by an employer to an employee, said tenancy shall cease and determine ten days after written notice to vacate: Provided further, That not more than fifteen (15) days’ notice in writing by a tenant shall be necessary to terminate any tenancy as described in this section of persons in the military service of the United States in which the termination of tenancy is necessitated by military orders.