We do not think the contract is ambiguous and, therefore, it must be construed according to its terms. Williams v. Johns-Carroll Lumber Co., 238 Ala. 536, 192 So. 278; W. T. Smith Lumber Co. v. Fox, 26 Ala. App. 587, 164 So. 213. Furthermore a contract providing for extra-judicial means of hearing or determining grievances growing out of disputes between employee and employer does not deprive the employee of his right to resort to courts when he has complied with the administrative remedies for first determining the dispute.