(1) "Employ" means to provide with a job that pays wages or a salary, and includes the responsibility of hiring and firing. The employer shall pay payroll taxes on behalf of the employee.

(2) "Farm or ranch" is defined in 39-3-402 , MCA.

(3) "Installation of plumbing and drainage systems" means, but is not limited to, the measuring, laying-out, cutting, fitting, soldering and gluing of pipe and/or the installation of fixtures and equipment for the purpose of connecting potable water or sewage.

(4) "Installation of water conditioner service" means installation of a device that requires connection to the water piping only and the installation of the drain to an acceptable indirect waste receptor as required by the plumbing code as adopted by the state of Montana, and as required by Title 37, chapter 69, MCA. This exemption does not apply to connections to any public water supply or to commercial installations.

(5) "Minor work" means installation of an appliance that requires connection to the water piping only and the installation of the drain to an acceptable indirect waste receptor as required by the plumbing code as adopted by the state of Montana, and as required by Title 37, chapter 69, MCA. The installation must be performed by an agent of, or the dealer from whom the appliance was purchased.

(6) "Manufactured house" means a structure, transportable in one or more sections, which, in the traveling mode, is eight body feet or more in width or 40 body feet or more in length, or, when erected on site, is 320 or more square feet, and which is built on a permanent chassis and designed to be used as a dwelling with or without a permanent foundation when connected to the required utilities, and includes the plumbing, heating, air-conditioning, and electrical systems contained therein, except that such term shall include any structure which meets all the requirements of this section except the size requirements.