Due to the interactions between the working areas involved in a production process, such as operation, quality, management, working environment, LCC management and analysis and maintenance, problems in these working areas are usually complex. It is well-known that maintenance is influenced by and influences these working areas. Maintenance role can be described technically using; failures, downtime, availability, planned stoppages, etc. or economically using; direct cost of maintenance, maintenance cost to production cost, spare part cost, etc. In order to high light maintenance technical and economic role and quantify its impact on company profitability and competitiveness, it is necessary to cover all relevant working areas within plant where maintenance affect. Thus, maintenance should be considered from different perspectives due to its interplay with the working areas involved in the production process. In this paper, maintenance is recognised as a means for maintaining the quality of the working areas involved in a production process at a continuous reduced cost. Also, we introduce maintenance from different perspectives based on its role in company profitability and competitiveness. Further more, the paper give big attention to introduce and discuss Total Quality maintenance (TQMain) philosophy with respect to the maintenance broader definition. An industrial case highlights TQMain applicability & maintenance economic importance is also introduced.