Reference

Fall restraint keeps a worker from reaching the hazard; fall arrest catches a fall already in progress. This reference sets out the hierarchy, a side-by-side comparison, the anchorage rule OSHA actually enforces for restraint, how work positioning differs from both, and where restraint quietly stops being restraint on a real jobsite.

ANSI/ASSP Z359.14-2021 replaced the Class A and Class B self-retracting lifeline labels with Class 1 and Class 2 on August 1, 2023, and changed what the class measures: anchorage position, not stopping distance. Covers both classes side by side, why Class A does not convert to Class 1, and how edge rating differs from class.