Please advise which is correct in the following sentence: I can get three month's worth of medication at a time. OR: I can get three months' worth of medication at a time. Thanks so much.
Singular: "one month"; so "one month's worth"
Plural: "two months", "three months", etc.; so "two months' worth", "three months' worth", etc.

one dollar's worth; two dollars' worth; one day's worth; several days' worth; etc.

Hope that helps. Emotion: smile
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What about Schwab Capital Markets?

Schwab Capital Markets' plan was not sustainable.


Or should it be "Market's"
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AnonymousWhat about Schwab Capital Markets
If Markets is part of the name and always ends in an 's', then it would be Schwab Capital Markets' plan.

However, if it was Schwab Capital Market, then it would be Schwab Capital Market's plan.
What about "three-months maternity leave" vs. "three-month's maternity leave?"
Depends on what you're going for.

If you're trying to say that you want a maternity leave that would last three months, then it would suffice to say "a three-month maternity leave".

If, however, you're trying to say that you would like to be compensated in some way for your maternity leave, then its "three months' maternity leave"(worth of money, for example).

This is because in the first case, you're saying that you'd like to take a maternity leave (which is a singular compound noun), which would last for the duration of three months - nothing needs to be in the possessive. In the second case, you're saying that you'd like three months' worth of (insert compensation currency of choice) FOR your maternity leave. It's this worth of part that changes the form into the possessive.

Hope this makes sense.
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