U.K. Prime Minister David Cameron has unveiled a four-year plan on Friday that aims to lower the number of immigrants to the country, according to BBC.

Cameron's proposal heavily focuses on imposing stricter policies on immigrants and requires the full support and cooperation of leaders of other European Union (EU) states.

The prime minister made the new regulations in response to the increasing volume of migrants from other EU states to the country. From 2013 to 2014, the number of migrants to the U.K. reached 260,000, USA Today reported.

Cameron aims to lower this figure by 100,000 before the elections.

"People have understandably become frustrated," the prime minister said during his speech in Central England.

"People want the government to have control over the number of people coming here and the circumstances in which they come," Cameron added.

Under the plan, migrants are required to ensure their employment before traveling to the U.K. This means they must prove that they have already received a job offer prior to their migration.

They must then maintain their employment for a minimum of four years in the U.K. before claiming benefits such as welfare payments and social housing.

Those who are unable to secure a job in the U.K. within six months after their arrival will be asked to return to the country where they came from

In addition, migrants working in the U.K. will not be allowed to bring in their family members who are residing in their home countries.

Cameron noted that his proposal will only be enacted with the help of other EU state leaders, who will have to conduct revisions to their treaties with the U.K., according to the Irish Times.

"If our concern fall on deaf ears and we cannot put our relationship with the EU on a better footing, then of course, I rule nothing out," the prime minister said.

"Immigration benefits Britain, but it needs to be controlled, it needs to be fair and it needs to be centered around our national interest," he added.