The phrase "a major effort by" is correct and usable in written English.
It can be used to describe a significant undertaking or initiative that is being carried out by a person or group.
Example: "The project was a major effort by the entire team to improve community engagement."
Alternatives: "a significant initiative from" or "a substantial undertaking by".
The administration proposal coincides with a major effort by House Republicans to reshape Medicaid.
Early feedback will also inform a major effort by new chief executive David Potts make Morrisons more attractive to shoppers.
He said the military operation was part of a campaign to combat a major effort by the Taliban to regroup in a bid for power.
Ten years ago it was almost affordable, but is now the subject of a major effort by the gallery and its benefactors.
Aid agencies fear that without a major effort by the international community, survivors of the storm will face a fresh outbreak of the disease.
A major effort by the Obama administration to keep homeowners out of foreclosure may be reaching its limits long before the crisis abates.
A major effort, fortified by the city and the banks, to create opportunities for black businesses and residential building owners needs to gain speed on the franchises and developers who will turn Harlem into just another part of Manhattan, owned by the same faces.
The Avahan HIV prevention initiative is a major effort funded by the Bill and Melinda Gates Foundation that aims to reduce HIV transmission in the general population by focusing HIV prevention efforts on female sex workers and their clients, men who have sex with men, truck drivers and injecting drug users who are at high risk of getting HIV [ 1].
The UAE has launched a major effort to promote renewables by encouraging research, development and innovation in the UAE and abroad.
TV Everywhere is more than just cable companies covering their rears, it is a major effort also being embraced by the broadcast networks themselves, who have not been able to put their full programming online, and who deeply want to preserve the dual revenue stream that drives their business today subscriber fees and advertising.
For example, in 2008, the US National Institutes of Health (NIH) launched a major effort to code funds by disease area, the Research, Condition, and Disease Categorization (RCDC) [ http://report.nih.gov/rcdc/] to help obtain accurate estimates of funded research.
