820 ILCS 305/12
An employee entitled to receive disability payments shall be required, if requested by the employer, to submit himself, at the expense of the employer, for examination to a duly qualified medical practitioner or surgeon selected by the employer, at any time and place reasonably convenient for the employee, either within or without the State of Illinois, for the purpose of determining the nature, extent and probable duration of the injury received by the employee, and for the purpose of ascertaining the amount of compensation which may be due the employee from time to time for disability according to the provisions of this Act. An employee may also be required to submit himself for examination by medical experts under subsection (c) of Section 19.
An employer requesting such an examination, of an employee residing within the State of Illinois, shall deliver to the employee with the notice of the time and place of examination sufficient money to defray the necessary expense of travel by the most convenient means to and from the place of examination, and the cost of meals necessary during the trip, and if the examination or travel to and from the place of examination causes any loss of working time on the part of the employee, the employer shall reimburse him for such loss of wages upon the basis of his average daily wage. Such examination shall be made in the presence of a duly qualified medical practitioner or surgeon provided and paid for by the employee, if such employee so desires.
In all cases where the examination is made by a surgeon engaged by the employer, and the injured employee has no surgeon present at such examination, it shall be the duty of the surgeon making the examination at the instance of the employer to deliver to the injured employee, or his representative, a statement in writing of the condition and extent of the injury to the same extent that said surgeon reports to the employer and the same shall be an exact copy of that furnished to the employer, said copy to be furnished the employee, or his representative as soon as practicable but not later than 48 hours before the time the case is set for hearing. Such delivery shall be made in person either to the employee or his representative, or by registered mail to either, and the receipt of either shall be proof of such delivery. If such surgeon refuses to furnish the employee with such statement to the same extent as that furnished the employer said surgeon shall not be permitted to testify at the hearing next following said examination.
If the employee refuses so to submit himself to examination or unnecessarily obstructs the same, his right to compensation payments shall be temporarily suspended until such examination shall have taken place, and no compensation shall be payable under this Act for such period.
It shall be the duty of surgeons treating an injured employee who is likely to die, and treating him at the instance of the employer, to have called in another surgeon to be designated and paid for by either the injured employee or by the person or persons who would become his beneficiary or beneficiaries, to make an examination before the death of such injured employee.
In all cases where the examination is made by a surgeon engaged by the injured employee, and the employer has no surgeon present at such examination, it shall be the duty of the surgeon making the examination at the instance of the employee, to deliver to the employer, or his representative, a statement in writing of the condition and extent of the injury to the same extent that said surgeon reports to the employee and the same shall be an exact copy of that furnished to the employee, said copy to be furnished the employer, or his representative, as soon as practicable but not later than 48 hours before the time the case is set for hearing. Such delivery shall be made in person either to the employer, or his representative, or by registered mail to either, and the receipt of either shall be proof of such delivery. If such surgeon refuses to furnish the employer with such statement to the same extent as that furnished the employee, said surgeon shall not be permitted to testify at the hearing next following said examination.
820 ILCS 305/12