"methods employed by" is correct and can be used in written English.
You can use it when you want to describe the specific methods or techniques someone used to accomplish something. For example: "The methods employed by the scientists in the experiment were highly effective."
Describes the tortuous methods employed by the prisons to enforce discipline.
Yesterday's extract dealt with the methods employed by journalists from the 1950s onwards.
Certainly, the current methods employed by mosquito control districts against the Aedes are imperfect.
But this is only one of many methods employed by scientists over the years to work out where animals roam.
Last week, Taylor focused on what might politely be called old-school methods employed by the United States and the west: arbitrary detention, secret prisons, outright torture.
The book is a study of the use of torture and other secret methods employed by the Bush administration in the name of the war on terror.
Last month Prince Alois, right, called the methods employed by Germany to obtain information on tax evaders an "attack" on Liechtenstein, which punishes infringements on its banking secrecy.
He gives us a detailed, "CSI -type understanding of the investigative methods employed by the poliCSI -typee compunderstandingnics perfofmed by Salander.
Giorgio Croci, a Rome-based engineer and expert on ancient monuments, said the methods employed by medieval architects were a key factor in the region's damage.
The violent, brutal methods employed by the Selma Sheriff, Jim Clark, to break it up resulted in more than sixty marchers being taken to hospital.
The location of the TFI and the methods employed by those who work there became clear during the Guardian investigation, with both former inmates and intelligence officials speaking out about its operations.
