Children under 18 years of age are prohibited from performing work that endangers their health, safety or morals. They may not undertake hazardous work. Much of the work performed in garment factories is considered hazardous. Children must not operate dangerous machinery or equipment (including cutting, sewing, knitting or weaving machines, boilers or lifts), or engage in heavy lifting. They also must not perform work that could expose them to harmful chemicals, electricity, high levels of dust or noise, extreme temperatures or heights.