Mont. Code Ann. § 41-2-106

41-2-106 . Prohibited employment of minors who are 14 and 15 years of age. Unless otherwise exempted, a minor 14 or 15 years of age may not be employed in the prohibited occupations in 41-2-107 or in:

(1) a manufacturing occupation;

(2) a processing occupation, including but not limited to filleting fish, dressing poultry, cracking nuts, or laundering and drycleaning;

(3) an occupation that requires the performance of duties in a workroom or workplace where goods are manufactured, mined, or processed;

(4) the operation or tending of a hoisting apparatus or of power-driven machinery;

(5) an occupation in connection with:

(a) transporting persons or property by rail, highway, air, water, pipeline, or other means;

(b) warehousing and storage;

(c) communication and public utilities; or

(d) construction or repair;

(6) an occupation in a retail, food service, or gasoline establishment, including:

(a) work performed in or around a boiler or an engine room;

(b) work in connection with the maintenance or the repair of an establishment, machine, or equipment;

(c) outside window washing that involves working from windowsills and all work requiring the use of ladders, scaffolds, or their substitutes at a height of more than 20 feet;

(d) an occupation that involves operating, assembling, adjusting, cleaning, oiling, or repairing power-driven food slicers and grinders, food choppers and cutters, or bakery-type mixers;

(e) work in freezers and meat coolers and all work preparing meat for sale, except wrapping, scaling, labeling, weighing, pricing, and stacking when performed in other areas;

(f) loading or unloading goods to and from a truck, railroad car, or conveyor; or

(g) an occupation in a warehouse, except for office or clerical work;

(7) the following agricultural occupations, unless otherwise exempt or working as a student-learner pursuant to 41-2-109 :

(a) felling, bucking, skidding, loading, or unloading timber with a butt diameter of more than 9 inches;

(b) repairing a building from a ladder or scaffold at a height of more than 20 feet;

(c) working inside:

(i) a fruit, forage, or grain storage structure designed to retain an oxygen-deficient or toxic atmosphere; or

(ii) an upright silo within 2 weeks after silage has been added or when a top unloading device is in operating position;

(d) handling or using agricultural chemicals classified as poisonous;

(e) handling or using a blasting agent, including but not limited to dynamite, black powder, sensitized ammonium nitrate, blasting caps, or primer cord; or

(f) transporting, transferring, or applying anhydrous ammonia.