The phrase "a rationale for not" is correct and usable in written English.
It can be used when explaining the reasoning or justification behind a decision or action that involves not doing something.
Example: "The committee provided a rationale for not approving the proposed budget, citing insufficient funds."
Alternatives: "a justification for not" or "a reason for not".
He said it would be tragic if Israel's security became a rationale for not recognizing a case of genocide.
It is not enough to cite the existence of the tax credit as a rationale for not increasing the minimum wage.
There's a rationale for not immediately disclosing details of emergency lending by the Fed, since doing so might create volatility in the markets it was intended to stabilize.
A rationale for not considering extensions would be to regard atomic systems as definitions in the sense of definitional reflection (see section 2.3.2) rather than just production systems describing an information state.
In case after case, it has invoked the pending appeal as a rationale for not complying with routine discovery requests from plaintiffs (a gross misrepresentation of the issue on appeal, which turns on whether certain documents can be made public).
Bayard suggests that social status depends on seeming to have read lots of books that, truth be told, no one actually enjoys reading, and so not only do you have to have a good line of bull but you also have to have a rationale for not reading, a theory that supports your practice (although, unless you are Professor Bayard, you shouldn't reveal your rationale).
This ought to be underpinned by a reasonable level of research and a clear rationale for not simply going to market.
Before the same panel last week, Dan Coats, the director of national intelligence, and Adm. Michael S. Rogers, the director of the National Security Agency, gave a similar rationale for not answering questions.
Less physical contact meant less chance of communicating dangerous diseases, and there was a psychological rationale for not getting too emotionally invested in any one child.
By citing a spurious rationale for not considering this, master obstructionist and Senate Majority Leader Mitch McConnell (R-Ky). shows himself to be not only partisan but mostly concerned with the Republican legislative agenda and his own position.
Generally, if a company receives a substantial vote against its say-on-pay proposal (even if less than a majority of shares voting at the meeting), investors will expect the company to either make changes to its compensation program going forward or to provide an understandable rationale for not making such changes.
