Hard hat
A hard hat was a type of helmet designed to provide the wearer with safety while working in construction, mining, manufacturing, or utility work.

Gregory wore a hard hat and drove a forklift when he was employed at Plexicorp in 1986. ()

In the alternate reality, two members of Wilbur's species wore small transparent work helmets (as well as jumpsuits and goggles) while walking around Starbase Yorktown in 2263.  ()

Thadial Bokar wore a hard hat as he visited the Tigan family's pergium mines in 2375. ()

In 2385, many workers at Utopia Planitia Fleet Yards on Mars (excluding synths) wore hard hats. (; )

External link 
 
Clothing