Electro-magnetic fields (EMF) are areas of energy that surround electrical devices and power sources. Prolonged or high exposure to EMF can potentially affect the health and safety of individuals, particularly those with medical devices like pacemakers or defibrillators. An EMF survey involves measuring and mapping the electromagnetic fields in the workplace to identify areas where exposure levels may be a concern. This allows employers to take appropriate steps to minimize risks, ensuring that employees with medical devices are not affected, while maintaining a safe environment for everyone.