Meaning
A worker in a hard hat, usually a yellow safety helmet, representing construction, building sites and manual trades. This is the gender-neutral version; man and woman versions also exist, with skin tones for each.
It is the standard sign for work in progress, used for renovations, road works and pages that are still being built. It pairs with π§ or ποΈ: βWebsite is under maintenance tonight, back tomorrow morning π·π§β