Over the past 30 years information technology has had an increasing presence in the operational side of most businesses. At the same time, approaches to the organisation of work and the management of people have changed and developed. Debate exists today around the role that information should play in operations. Some argue that IT can have a significant impact on operations while others argue that IT is being over used and that the focus should be on simplification.
This post traces the history of approaches to operations management and the role that information technology might play in these. Scientific management, human relations and socio technical systems are outlined. More recent approaches in lean operations and enterprise resources planning are considered, particularly the debate over the pursuance of a lean strategy and the role (if any) for ERP within this. The role that information technology takes in operations will depend on the overall operations strategy adopted. This will be influenced by beliefs about the motivation of people at work.
Scientific management and the human relations school were explained in the previous post. In 1979 the United Nations’ International Labour Organisation described scientific management as:
“Under this system the operative is regarded as a person of a very low intellectual and educational level, a waster with an innate tendency towards low output, needing regular pacing to overcome habitual apathy, and requiring close supervision, but capable of positive motivation through payment by results.”
The human relations school was critical of scientific management and McGregor’s theory X and theory Y questioned the model of employee motivation that scientific management was based on:
Socio technical systems also emerged as an approach to operations in the 1950s. They expanded on human relations theory, arguing that it was too narrow. They argued that the human relations school assumed that the use of technology in operations was fixed and that activity to improve worker motivation could not change this. The socio technical school argued that work is a combination of social and technical systems and that both had to be optimised together to create a work environment that would maximise employee motivation and operational performance. The design of manufacturing environments should take both into account.
Many companies adopted a socio technical systems approach. Volvo, in their plants in Kalmar and Uddevalla in Sweden and, more recently, General Motors’ Saturn plant in the US were examples of this. Research evidence of the performance of socio technical systems vs. other manufacturing approaches is inconclusive – we don’t know if the socio technical approach produces better performing operations. The following video describes the use of socio technical systems by Volvo:
By the mid 1980′s there was a recognition that North American and European manufacturing performance was falling significantly behind that in Japan. Womack, Jones and Roos researched this and in 1990 published their very influential book, The Machine That Changed the World. Their research quantified the gap:
Study of Japanese manufacturing identified a new approach to operations – Lean Manufacturing which was argued to be the reason for the gap. North American and European companies were urged to adopt this lean approach.
Writing in 1987, Voss described lean manufacturing as:
“a disciplined approach to improving overall productivity and eliminating waste. It provides for the cost effective production and delivery of only the necessary quantity of parts at the right quality, at the right time and place, while using a minimum amount of facilities, equipment, materials and human resources.”
and argued that it required:
“total employee involvement and teamwork”
The main elements of a lean approach were described by Bhasin and Burcher in 2006 who argued that a lean approach was a new philosophy of operations management that had the following elements:
The following video provides a good introduction to lean operations:
Toyota are seen as one of the leaders in lean:
Lean has now been applied beyond the manufacturing environment, in most other parts of the economy. In service industries it has featured the introduction of problem solving groups, upgrades to housekeeping and quality, clarification of process flows, changes to equipment and process technologies etc. The following video looks at lean in an office environment:
The Lean Enterprise Research Centre at the University of Cardiff in Wales looks at how lean is applied in a variety of sectors:
Information technology has been applied in operations increasingly over the past thirty years. It has been applied in operational equipment and in more recent years information technology has been used to integrate operations. Computer integrated manufacturing focused particularly on the application of information technology to processing equipment:
Enterprise resources planning is described by PC World as:
“An integrated information system that serves all departments within an enterprise. Evolving out of the manufacturing industry, ERP implies the use of packaged software rather than proprietary software written by or for one customer. ERP modules may be able to interface with an organization’s own software with varying degrees of effort, and, depending on the software, ERP modules may be alterable via the vendor’s proprietary tools as well as proprietary or standard programming languages.
“An ERP system can include software for manufacturing, order entry, accounts receivable and payable, general ledger, purchasing, warehousing, transportation and human resources. The major ERP vendors are SAP, Oracle (PeopleSoft and J.D. Edwards), SSA Global (Baan) and Microsoft.”
The following video describes ERP:
The following grahic illustrates the latest generation of ERP that focuses on total integration of business processes:
There is debate about enterprise resources planning technology and lean operations. Some argue that a lean approach is not compatible with ERP. Lean focuses on simplifying processes and using shopfloor level visibility to control process flow. ERP is based on using information technology to manage shopfloor activity and a wide range of other functions which is argued to work against the lean approach. They point especially to the use of pull systems of process flow in lean and push systems in ERP, as the following graphic illustrates:
Others argue that ERP is more appropriate than lean in managing operations. They accept that the approaches are incompatible and assert that ERP will produce better results.
A third group argue that a blended approach is possible with lean being used to control shopfloor operations and ERP being used to manage areas and activities beyond the shopfloor. The following graphic illustrates this:
The following video discusses the relationship between ERP and Lean:
This post has discussed the development of approaches to operations in organisations. A historical view is taken of this so that the progression of approaches that has led to current practices can be understood. Debate continues today on the approach that should be taken – that debate implies beliefs in human motivation.