Basic workplace hazards include safety hazards, chemical hazards, biological, physical and ergonomic hazards. Safety hazards are any unsafe working conditions that can cause injury, illness and even death. Safety hazards include anything can cause spills or trips. Ergonomic hazards are any hazards that can cause biomechanical stress on the employee such as having to be in awkward and stressful positions over a long period of time, being exposed to extremely cold temperatures and forceful exertions. Ergonomic hazards include poor posture, frequent lifting, vibrations and improperly adjusted workstations and chairs.