Physical factors include constant standing, walking, stooping, kneeling, crawling, reaching, manual handling, use of hearing, smell, near/midrange/far vision, depth perception, color/field of vision, bending; frequent climbing, typing; occasional sitting and pushing Working conditions include constant exposure to air quality; frequent exposure to weather, extreme heat, noise, vibration and occasional exposure to wet/humidity. Potential hazards include constant exposure to high exposed places, chemicals, insecticides/pesticides, client contact, infectious exposure, needles/syringes, computer use; frequent equipment use and occasional exposure to moving mechanical parts.