Mike Meagher, whose construction company is building two Midtown high-rises, has ordered a dozen laser thermometers to check the temperatures of work crews. And he's limiting how many people ride in a buckhoist, an elevator that can fit as many as 30 workers.

At the Fifth + Broadway project downtown, where 550 people work each day, Dennis Georgatos has nixed the routine "stretch and flex" group gatherings that mark the start of a shift and help orchestrate the day's activity.

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