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JLPT N2ConstructionFormal
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さいしてOn the occasion of

さいして formally presents an important or consequential occasion as the setting for a relevant action, preparation, precaution, or response.

Meaning and use

The occasion is normally defined and noteworthy: entering an institution, signing a contract, beginning an assignment, responding to an emergency, or marking an anniversary. The action that follows should be meaningfully connected to that occasion, rather than merely happening at the same time.

Core formations

The following examples show attachment to a noun, a verb, and a phrase placed before another noun.

しんせいどうにゅうさいしてぜんしょくいんたいしょうとしたけんしゅうじっします。

On the introduction of the new system, training will be provided for all staff.

Analyze

The introduction of the system is a significant institutional occasion, and the training is a direct preparation for it.

かいがいにんするにさいしてひつようぼうせっしゅけました。

Before taking up my overseas post, I received the required vaccinations.

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けいやくていけつさいしてのちゅうこうにまとめます。

The precautions associated with concluding the contract are summarized below.

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Choosing among close expressions

さい is a more flexible formal expression meaning “when” and may simply locate an event in time. さいして more strongly presents the occasion as relevant to the action that follows. にあたって often highlights the beginning of a significant undertaking and the preparation or resolve it requires. By contrast, さいして can also frame an unfavorable event when the following action is an appropriate response.

だいていでんさいしてりんなんじょかいせつした。

In response to the large-scale power outage, the city opened temporary shelters.

Analyze

The power outage is an adverse occasion, and opening shelters is an institutional response to it.

More examples

にゅうがくさいしてがくせいしょうほうほうをごかくにんください。

When enrolling, please check how to collect your student ID card.

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そうりつじゅっしゅうねんむかえるにさいしてしゃちょうぜんしゃいんしゃべた。

As the company marked its fiftieth anniversary, the president expressed gratitude to all employees.

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さいがいはっせいさいたいさくほんただちにせっした。

When the disaster occurred, an emergency response headquarters was established immediately.

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ほんしゃてんさいしてのあんないをウェブサイトにけいさいしました。

We posted information concerning the relocation of our head office on the website.

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けんきゅうかいするにさいしてさんしゃぜんいんからどうた。

Before beginning the study, consent was obtained from all participants.

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退たいにんさいしてながねんのごえんこころよりかんしゃもうげます。

As I step down from my position, I would like to express my heartfelt gratitude for your many years of support.

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