An employer shall provide for acclimatization of exposed employees for a period of up to 14 days: When an employee is newly exposed to heat in the workplace; and When an employee returns to work after 7 or more consecutive days of absence from the workplace. An employer shall monitor employees during the acclimatization period for signs of heat-related illness through regular communication via: Phone or radio; A buddy system; or Other effective means of observation. An employer shall develop and implement an acclimatization schedule which complies with one of the following: A schedule which gradually increases exposure time over a 5—14 day period, with a maximum 20 percent increase each day; A schedule which uses the current National Institute for Occupational Safety and Health’s recommendations for acclimatization; or A schedule which uses a combination of gradual introduction and alternative cooling and control measures that acclimate an employee to the heat. The acclimatization schedule shall be in writing and consider the following elements: Acclimated and unacclimated employees; The environmental conditions and anticipated workload; The impact of required clothing and personal protective equipment to the heat burden on employees; The personal risk factors that put an employee at a higher risk of heat-related illness; Re-acclimatizing employees as necessary, in accordance with §A of this regulation; and The use of alternative cooling and control measures.