con·trac·tu·al 
/kənˈtræktʃəwəl/ adjective
/kənˈtræktʃəwəl/ adjective : of or relating to the things that are required by a contract
▪ They had to fulfill their contractual obligations/requirements before they could get paid.
▪ They had to fulfill their contractual obligations/requirements before they could get paid.
— con·trac·tu·al·ly adverb
▪ The company is contractually obligated to pay the union.
▪ The company is contractually obligated to pay the union.
