Question about ~をもって

Specifically this one, “as effective from.”

The grammar point says that it’s only used to mark the endpoint of something, but then one of the example sentences seems to be in direct contrast to that.

辞令:「一条蛍殿。令和2年5月1日をもって経理部第5課勤務を命ずる。」

So is it possible to use this grammar point to mark the start of something, or is this example sentence unnatural?

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Hello, and thanks for participating in the forums!

With this particular sentence, we can see how it might seem to contradict the explanation in the Caution, but this is actually more of a grey area.

While it’s certainly true that the person is ‘starting’ a new position, the larger context would be that they were presumably working in another division before, so this is actually describing a change in position rather than the start of something completely new. (To use the wording in the writeup, whatever their previous position was is a ‘significant’ event in this context.)

We understand it’s a bit tricky, but does this interpretation help to clarify it at all? If you have any lingering questions, feel free to follow up and we’ll do our best to explain further!

P.S. to you and everyone – I’m new to the team and while I’ve been active behind the scenes for a few months now, this is actually my first official(?) forum post. Anyhow, you’ll probably be seeing me around here more in the days to come, so よろしくお願いいたします!

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I’m honored to have received your first official post!

So for example, if they were a new hire into the company and their previous job wasn’t anything worth highlighting, then it wouldn’t be as natural?

Thanks for the help!

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I think it can be used for more than just when a period ends. Idk if these examples help: 【例文付き】「本日をもちまして」の意味やビジネスでの使い方・言い換えまで紹介 | ビジネス用語ナビ

Thank you for the warm welcome!

And yes, the idea is that it’s most often used to express an ending or a change rather than a pure beginning, so it would be less likely to be used in the sort of case you describe.

That said, the writeup does say ‘typically’, in part because there are some grey areas and edge cases, so the best idea (as it often is) is to look at as many example sentences as you can to get a feel for when it’s used.

The link above is a great list of examples, so thank you very much for that! m(_ _)m

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