"established contracts" is a correct and usable phrase in written English.
It can be used to refer to written or verbal agreements or contracts that have already been made. For example, "The company must abide by the established contracts, even if they are no longer beneficial."
"Our government will honor established contracts, will not neglect the control of inflation and will maintain a posture of fiscal responsibility," Mr. da Silva said in a wide-ranging speech this afternoon.
Travelocity and Expedia have established contracts with airlines that compensate the Web sites for ticket distribution.
Along the route, Braathens SAFE established contracts with agents, or stationed their own employees.
In Bolivia, where their union has existed since 1993, out of 4,000 domestic workers, only four have established contracts with their employers — an abysmal rate.
Coalitions involving the government, industry and higher education were built and maintained, budgetary lines were established, contracts were awarded and the work commenced.
Scheduling and management of processing, storage, and transportation resources should be done according to established contracts.
The law established contracting goals for each city agency and left the Department of Small Business Services to oversee the program.
Culbertson established contract bridge as the leading card game and himself as its principal authority by a succession of tournament victories and by various maneuvers devised to publicize contract bridge and Culbertson personally.
But it meant that twenty-five million Americans got new drug plans, and that all sixty thousand retail pharmacies in the United States had to establish contracts and billing systems for those plans.
In the offline model, advertisers establish contracts with a broker, from now on called the Ad Network.
The coordinator also establishes contracts with car rental providers and hotel chains, often resulting in reduced rates.
