The phrase "a backstop for" is correct and usable in written English.
It is typically used to refer to a safeguard or a measure that provides support or protection in case something goes wrong.
Example: "The new policy serves as a backstop for the company's financial stability during uncertain economic times."
Alternatives: "a safety net for" or "a fallback for".
The state is acting as a backstop for informal monitoring: in stable societies, transactions between strangers are mostly self-policing.
Those opposing reform argue that emergency rooms are always available as a backstop for those without insurance.
A fund of 440 billion euros (about $600 billion) was set up in May as a backstop for European countries.
"There is now a backstop for Greece, so that the scenarios that were circulating in terms of potential failure are now completely irrelevant," he said.
Second, banks will at last agree to a deposit-insurance scheme, a backstop for savers if a bank ever goes bust.
For this to work, there must be a European banking resolution mechanism to recapitalize banks and provide a backstop for a euro-zone-wide deposit guarantee scheme.
May did not not rule out a statutory backstop for a new press regulator, but warned about possible "unintended consequences".
The federal agency that guarantees pensions has lost $2.1 billion on its investments so far this year, foreshadowing expected losses among corporate pension funds, state retirement systems and others that provide a financial backstop for an aging population.
This is a great deal – a government backstop for your cheap funding combined with the ability to take a lot of risk (e.g., metal warehouses, where JPMorgan Chase and Goldman Sachs are big investors, or emerging markets, where Citigroup has a great deal of exposure).
But if the initial results from South Carolina and Florida are confirmed by other pollsters, they would suggest that Florida could play a backstop role for Mr. Romney, in somewhat the same way that New Hampshire did for him relative to Iowa.
He says Ofcom would have reservations about being a backstop regulator for the press.
