Safe work procedures would not allow someone to work outdoors during a design-level wind event. And if a person is working indoors, wind would have no effect. And sure, maybe the design earthquake would cause a fall, but the odds of that and simultaneous peak effects have got to be minuscule.
Z359.6-2016 lists these load combinations for fall protection systems (simplified a bit for clarity):
(1) 1.4D <--ok
(2) 1.2D + 1.6A + 0.5L <--ok
(3) 1.2D + 1.1(A + L) <--huh? 1.1?
(4) 1.2D + 1.1A + 0.5L + (1.0W or 1.0E) <--WOW. Full W or E.
where A = the fall arrest force, and the others...
