If an employee is medically removed (transferred to a hospital) under the medical surveillance requirement of an OSHA standard, you must record the case on the OSHA 300 Log. 29 C.F.R. § 1904.9(a). The case would be entered as either a case involving days away from work or a case involving restricted work activities. If the medical removal is the result of a chemical exposure, you must enter the case on the OSHA 300 Log by checking the poisoning column. 29 C.F.R. § 1904.9(b)(1). If you voluntarily remove an employee from exposure before the medical removal criteria in an OSHA standard is met, the case need not be recorded. 29 C.F.R. § 1904.9(b)(3).