All duties required by the stairway and ladder rules must be performed employees begin work that requires them to use stairways or ladders and their respective fall protection systems.

Before.

Explanation:

In work related environments, stairways and ladder systems are generally considered to be the major source of fatalities, injuries or bodily harm being experienced by the workers who are working in construction sites.

According to the Occupational Safety and Health Administration (OSHA), all duties required by the stairway and ladder rules must be performed before employees begin work that requires them to use stairways or ladders and their respective fall protection systems.

This ultimately implies that, before any employee commences a work that requires the use of a stairway or ladder, all of the guidelines, rules and standard procedures should have been followed or done.

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