After areas where the afflicted workers were working in were shut down and sanitized, work proceeds at SoFi stadium in Los Angeles and Allegiant Stadium in Las Vegas.
Officials override local shelter-in-place and other restrictions for state workers and contractors deemed essential to ease conflict and confusion linked to the COVID-19 pandemic.
Trump has signed the $2-trillion measure passed by Congress, but in some cases, states and localities would determine how much to spend on operations or construction.
The Spot-R clip-on tag was designed to keep workers safe by monitoring for sudden falls, but working on site in a virus pandemic has seen it used for more creative applications.