The phrase "agreement is effective" is correct and usable in written English.
It can be used to indicate that a particular agreement or contract is currently valid and enforceable.
Example: "The agreement is effective as of today, and both parties are expected to adhere to its terms."
Alternatives: "agreement is in effect" or "agreement is valid".
The agreement is effective May 1, the company, based in San Francisco, said in a statement.
In some sense, one sign that a climate agreement is effective is that big hydrocarbon exporters hate it".
This Cooperative Agreement is effective following signing by the Secretary and the Governor, and upon publication as a final rule in the Federal Register.
Such further grant or agreement is effective with respect to all of the persons in whom the right it covers has vested under this subclause, including those who did not join in signing it.
Such further grant or agreement is effective with respect to all of the persons in whom the right it covers has vested under clause (2) of this subsection, including those who did not join in signing it.
This Agreement is effective until terminated by MicroCreditCard, at any time without notice.
The agreement was "effective immediately", the statement added.
The Breakthrough ACTION agreement was effective July 21, with work expected to begin immediately.
In addition, a national-local agreement was effective from 2007 to 2011 in which the local government committed to national ambitions on climate change policy, which was mostly concerned with climate change mitigation efforts, but also included a few climate change adaptation goals.
The agreement signed with Mr. Zabar is an operator's agreement and is effective through Nov. 30, 2011.
Although there is probably little disagreement with the definition, there is less agreement about what is effective commissioning and how quality and value should be measured and can be incentivised.
