Guidance to protect outdoor workers from lightning strikes

The US-American Occupational Safety and Health Administration (OSHA) and the
National Oceanic and Atmospheric Administration have released a Lightning
Safety When Working Outdoors Fact Sheet that provides employers and workers
with information about lightning hazards and protective measures that can be
taken to ensure workers' safety. Often overlooked as an occupational hazard,
lightning strikes can severely injure or kill workers in occupations such as
construction, logging, utility repair, agriculture, telecommunications, lawn
services, airport ground operations, and pool and beach lifeguarding.

Precautions should be taken to prevent worker exposure to lightning. Employers
should recognize lightning as an occupational hazard. Supervisors and workers
at outdoor worksites should take lightning safety seriously. Workers whose jobs
involve working outdoors in open spaces, on or near tall objects, or near
explosives or conductive materials (e.g., metal) have significant exposure to
lightning risks.

More info - Source: Occupational Safety and Health Administration