expression
safety first
A set phrase used as a motto or guiding principle, especially in workplaces, construction sites, and safety campaigns.
工事現場には「安全第一」の看板が掲げられている。
A sign saying 'Safety First' is displayed at the construction site.
当社では安全第一をモットーにしています。
Our company motto is safety first.
Compound of 安全 (safety) and 第一 (first, number one). A calque of the English phrase 'safety first', widely adopted in Japanese industrial and public safety contexts.