Abstract:
The research paper aims to study the need for development of internal audit and operational audit procedure based on problems in the job in 3 aspects; general internal audit process, operational audit process, and factors affected internal audit job. Completed data was collected from 73 internal auditors in the Office of Audit and Inspection, Port Authority of Thailand by questionnaires and interviews and then, analyzed by arithmetic mean, percentage, and mean differences t statistics test at significant level 0.05.The findings show that most of internal auditors are staff, earn bachelor degrees, major accounting and other field. They perceive that important factors for internal audit jobs are executive policy and executive support and the availability of internal auditors' skill and knowledge. Currently, internal auditor works comprehensively on both general internal audit and operational audit process, but the assessment on efficiency, economy and effectiveness of jobs is less in practice. The study on problems and need for development classified by job titles educational levels, and fields of study shows that management and staff, vocational graduated staff and bachelor or higher degree staff, and staff who are in major accounting and those in other majors, posses levels of need for development higher than levels of problems in the jobs. The issues highly needed for development are risk assessment, audit planning, and the assessment on efficiency, effectiveness and economy. The issues that earned the same level of problems and the levels of need for development are strategy in job selection, audit field work, summary and audit report. The issues that earned the significantly different levels of problems and need for development are evaluation or internal control and gathering evidences.