How often do self-retracting lanyards (SRLs) need to be recertified by the factory?

Recertification is dependent upon the manufacturer. Some manufacturers do not require recertification or periodic factory authorized service. Other manufacturers typically suggest a recertification every 1-2 years. The ANSI/ASSE Z359.14 standard published in 2012 includes a specific schedule as a normative part of the standard. In 2014, the schedule was revised to be optional due to complaints registered by a small number of manufacturers and end-users.