Basically everyone falls under osha 1926 standard now.
Roof tie off requirements.
Install warning lines no closer than 5 feet inside the roof edges and at a height of 34 to 45 inches.
A toprail between 39 and 45 inches from the working level raised as necessary to account for workers using stilts or otherwise working in an elevated location above the work surface see 29 cfr 1926 502 b 1.
In regards specifically to roof fall protection the 1910 standard specifies for low slope roofs that when work is performed less than 6 feet 1 6 m from the roof edge the employer must ensure each employee is protected from falling by a guardrail system safety net system travel restraint system or personal fall arrest system.
It replaces the old directive which allowed contractors to not tie off on certain things like setting trusses.
Under the standard the requirement for fall protection for this work does not depend on the duration of the fall hazard exposure.
With regard to fall protection requirements applicable to the construction work itself 1926 501 b 10 low slope roofs requires conventional fall protection a combination of a monitoring system and warning line or on roofs of 50 feet or less in width a monitoring system alone i e without a warning line be used.
As with most governing bodies osha has some very specific requirements regarding how where and when tie off systems and other safety measures must be used to help create a safe working.
Place warning lines and headers around the entire roof perimeter.
That all changes in june when this new directive goes into effect.