Outdoor workers safety during thunderstorms

http://www.channelnewsasia.com/mobile/singapore/construction-crane/2374518.html?cid=TWTCNA

I refer to the above news report that a crane caught fire after being hit by lightning. May I know what is the safety protocol for outdoor workers in the event there is a forecast of thunderstorm and lightning?

Do the safety officer stop all ongoing work?

Thank you.

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