にあたっては

Meanings

usually written using kana alone

A formal expression used to introduce a matter, occasion, or action under consideration: 'when doing X,' 'with regard to X,' or 'in connection with X.' Often appears in instructions, announcements, and written explanations.

契けい約やくにあたっては、内ない容ようをよく確かく認にんしてください。
When signing the contract, please check the contents carefully.
新あたらしい制せい度どの導どう入にゅうにあたっては、現げん場ばの意い見けんを聞きく必ひつ要ようがある。
When it comes to introducing the new system, it is necessary to listen to opinions from the workplace.
ご利り用ようにあたっては、以い下かの規き約やくをお読よみください。
Before using the service, please read the following terms.

Kanji

当hit, right, appropriate

Related words

にあたって
にあたって and にあたっては mean the same thing, but the は in にあたっては emphasizes the introduced matter as the topic or condition under discussion.
に際さいして
に際して is a slightly more formal equivalent used especially for special or notable occasions, while にあたっては fits everyday formal writing and instructions as well.
にあたり
にあたり is a terser, more literary variant of にあたっては, commonly seen in written notices and reports rather than spoken language.

Don't confuse with

についてN5
について is a neutral, general 'about/concerning' that works for any topic, while にあたっては is more formal and specifically ties the statement to an action or occasion.

Etymology

Grammaticalized from に plus the te-form of 当たる and topic は. The verb 当たる has senses such as 'to correspond to' or 'to apply to,' which supports the expression's meaning of addressing a particular occasion or matter.