The phrase "contributed to efforts" is correct and usable in written English.
You can use this phrase when describing how someone or something helped in a particular endeavor. For example, "The company contributed to efforts to protect the environment by reducing its resources consumption."
It spends almost $2 billion a year to cover 400,000 employees and their families and has contributed to efforts to use technology that is intended to rein in costs.
The Pew report noted that while the squeeze on state and local budgets had contributed to efforts to reduce prison populations, "financial pressures alone do not explain the decline".
Wealthy individuals and private foundations, such as the Sierra Club (founded 1892) and the National Audubon Society (founded 1905), also contributed to efforts to conserve natural resources and wildlife.
The government said local authorities accounted for a quarter of public spending and therefore it was only right that the sector contributed to efforts to rebalance the public finances.
Since 2007, UNFPA has contributed to efforts to save 774,000 lives through the provision of drugs and reproductive health services, and potentially averted an estimated 47 million unintended pregnancies and 18 million abortions.
State-controlled media in the kingdom and the Emirates contributed to efforts to undermine Sheikh Tamim's position with for the Gulf almost unprecedented attacks on Qatar's ruling Al Thani clan and interviews with little known dissident family members as well as former military officers opposed to the emir's policies.
The Schools-University Partnership Initiative has shown that academics engaging with schools can contribute to efforts to widen participation.
OPEC called on other oil-producing countries to "contribute to efforts to restore prices to reasonable levels, and eliminate harmful and unnecessary fluctuations".
Through the BID, businesses will be expected to contribute to efforts to spruce up the area with better lighting, more attractive storefronts and improved security.
We have a responsibility to our environment and to the nation to contribute to efforts to reduce CO2 emissions and improve our record on sustainability".
The outcomes of the workshop presented in this volume will doubtlessly contribute to efforts to preserve biodiverse pastoral ecosystems.
