contract
contract
A bargain or agreement voluntarily made upon good consideration, between two or more persons capable of contracting to do, or forbearing to do, some lawful act.
In mining, applies to an agreement between operator and worker to pay the latter so much per foot for excavating drift or stope. These people are known as contract miners and are usually skilled workers. They work harder than people on wages due to the incentive of higher earnings.
Agreement between contractor and employing company to construct, erect, install, and operate specified works under agreed conditions. A cost-plus contract is one in which the contractor undertakes a comprehensive activity, part of which may be subcontracted (or let out). A unit contract is one in which company awards a restricted part of the job to the contractor.
Time in Riyadh 
at any time
