The phrase "action to complement" is correct and usable in written English.
It can be used when discussing measures or steps taken to enhance or support something else.
Example: "The company implemented an action to complement its sustainability initiatives, ensuring a more comprehensive approach to environmental responsibility."
Alternatives: "measure to enhance" or "step to support".
First, it is neither essential nor practical to develop a common blueprint or plan of action to complement what will be agreed upon at the U.N. level because priorities and politics vary from country to country.
"There is no plan of action to complement what will be agreed upon," said Jeffrey Sachs, the Columbia University economist who, as the special adviser to the United Nations secretary general on the goals, serves as the chief global cheerleader for them.
More uniquely American action to complement the proceedings.
The UN Theme Group on HIV/AIDS is framing a joint plan of action to complement the government's national HIV/AIDS strategy currently under development.
If robust economic growth in places as far apart as South Asia, Latin America and the United States cannot narrow disparities and reduce poverty, there is a strong case for public action to complement market outcomes.
Tipping elements in Earth systems special feature: Reducing abrupt climate change risk using the Montreal Protocol and other regulatory actions to complement cuts in CO2 emissions.
"The name Terramanus ferromurus (Romu) is a nod to the concept of 'machine ecology,' in which autonomous systems can be introduced into natural environments as new participants, taking specific actions to complement and promote human environmental stewardship," said Melenbrink.
On the other hand, the overload of work concerning the population under the responsibility of a team can be a barrier to the development of other actions to complement health care.
Last month, the online video powerhouse Netflix started a political action committee to complement a budding lobbying effort in support of the idea that all content must be allowed to travel through the Internet on equal terms.
As an additional incentive, DC Universe is the only place you'll be able to order an exclusive new line of animated-style Justice League action figures, to complement the popular 6-inch Batman: The Animated Series figures the company has been making lately.
Specifically, our research projects examine MSN action in Tanzania to complement the National Multisectoral Nutrition Action Plan (NMNAP), a five-year strategy launched by the Tanzanian government in 2017.
