The phrase "caused a backlog" is a perfectly correct and usable phrase in written English.
It is typically used to describe a situation where there is a build-up of work or tasks due to a certain issue or cause. For example, "The pandemic caused a backlog of orders at the company."
This caused a backlog and organs retained for examination were stored in pots in a hospital store.
RBS's chief executive, Stephen Hester, says the actual problem was fixed very quickly, but caused a backlog of payments which is still being dealt with.
The sluggish process has caused a backlog of loans in foreclosure and is slowing the housing market recovery in judicial states, says Michael Fratantoni, the vice president for research and economics at the Mortgage Bankers Association.
In both places, strikes by judges, and politicians' reluctance to push through legal reforms, have caused a backlog of cases to mount up.Some countries, however, have started to introduce reforms to make life easier for firms and their creditors.
The limited number of green cards for such professionals, and country quotas, has caused a backlog of them trying to enter the United States, with the majority from India or China.
The Labor Department said on Thursday that the increase in jobless claims could be partly attributed to snowstorms along the East Coast, which caused a backlog at some offices.
This is causing a backlog of people who are desperate, often violently, as they have nowhere else to go.
Numerous consumer safeguards typically slow down the process and cause a backlog of cases in the courts.
It then causes a backlog for all the other angry impatient people (like myself) trying to shave a few precious seconds off their commute".
More than 1,000 flights in and out of New York's three major airports were canceled on Friday, causing a backlog of passengers and, at best, hours of delays.
Heavy snow and cold weather slowed the downward trend in initial jobless claims by causing a backlog in applications, but economists say they believe claims will soon drop below 400,000, a level believed to signal strong job growth.
