In addition, certain jobs may require employees to: Work outside and/or in adverse temperatures which could include extreme heat, cold, and humidity; Be exposed to vibrations, chemicals used in operations, fumes and food allergens (may include soy, dairy and other allergens); and. Working knowledge of food-safety systems, preventive controls, GMPs, sanitation, allergen management, quality systems, EHS, maintenance and reliability, capital delivery, production planning, warehousing, and distribution.