225 ILCS 705/16.01

A cage used for hoisting men must be of substantial and safe construction; have adequate steel bonnets to protect men riding on the cage; have enclosed sides; have gates, safety chains, or bars across the ends of the cage when men are being hoisted or lowered; and have sufficient handholds or chains for all men on the cage to maintain their balance. Such cage shall be fitted to guides running from the top to the bottom.