Lawrence P. Grasso and Thomas Tyson
INTRODUCTION AND BACKGROUND
Although the topic of lean accounting and its relationship with lean manufacturing may have lost some of its prominence in the academic literature since the early 2000s, it is still a topic of great importance to lean practitioners and researchers. Lean remains widely studied, and it is a widely used approach to process and operating improvement in manufacturing (Found & Bicheno, 2016). Lean production techniques have been extensively adopted in manufacturing firms (Doolen & Hacker, 2005; Maskell & Kennedy, 2007; Shah & Ward, 2007) and lean techniques have been adopted in many merchandising (supply chain) companies, service companies (e.g., health care, insurance, and finance), and government agencies (Hadid & Mansouri, 2014). Lean accounting is not a theoretical construct. As Fliedner (2018) noted, lean accounting emerged from practice as a response to dissatisfaction with existing cost accounting practices and performance measurement systems. The interaction between lean manufacturing (and more broadly, lean management and lean production) practices and MAC & PM practices are important to a large and growing segment of economic activity. Davis, Schleifer, Shackell, and Widener (2020) suggested that adopting lean accounting and aligning performance measurement to support lean manufacturing can lead to financial performance improvement significantly greater than that achieved from lean manufacturing practices alone. Accounting practitioners who understand how to support lean manufacturing and how to apply lean principles to accounting have the opportunity to add greater value to companies adopting lean production.
John Krafcik (1988) coined the term lean production to describe automotive plants that followed the Toyota Production System. Lean management and production differ dramatically from conventional management and production by prioritizing continuous improvement and eliminating waste from the perspective of the customer. Lean management and production focus on the entire production process as a dependent system and work to achieve continuous flow. Workers are empowered to be problem-solvers who need timely information to identify the root cause of problems and develop counter measures (Emiliani, 2007; Emiliani, Stec, Grasso, & Stodder, 2007; Liker, 2004). In contrast, conventional management and production usually have a more discrete product focus. The conventional production process is more hierarchical and is broken into functional departments managed by specialists, each trying to optimize their departments. Conventional management typically focuses on financial outcomes and meeting cost and production standards. Workers execute orders and are monitored for efficiency and effectiveness (Dennis, 2015). Thus, conventional management and lean management have far different organizational structures and information needs (Adler & Borys, 1996).
Many proponents of lean manufacturing have contended that traditional accounting systems are ill suited to support lean management and lean production and have called for new performance measures and measurement systems (Åhlström & Karlsson, 1996; Cunningham & Fiume, 2003; Johnson, 1992; Johnson & Bröms, 2000; Kaplan & Cooper, 1998; Maskell, Baggaley, & Grasso, 2012; Solomon & Fullerton, 2007; van der Steen & Tillema, 2018). For example, the enterprise transformation roadmap developed by MIT’s Lean Aerospace Initiative includes aligning new metrics and incentives in its planning cycle and monitoring and measuring outcomes in the execution cycle (Nightingale, 2009). Maskell et al. (2012) presented a lean accounting maturity path to align lean accounting with lean manufacturing practices. Emiliani et al. (2007) described the performance measures introduced to align with lean during the lean transformation at The Wiremold Company.
Kennedy and Widener (2008) developed a theoretical framework showing that the successful adoption of lean manufacturing would require changes in organizational structure, management accounting practices, and the management control system. Kristensen and Israelsen (2014) found support for the Kennedy and Widener framework in their longitudinal study of a Scandinavian electronics firm. Notwithstanding, most companies, even those engaged in lean transformations, continue to rely on traditional cost systems and conventional measures such as standard costs and variance analysis even though these systems and measures do not specifically capture the effects of lean improvements, and as some have argued, may even provide incentives for anti-lean behavior (Bargerstock & Shi, 2016; Cunningham & Fiume, 2003; Johnson & Bröms, 2000; Maskell et al., 2012; Solomon & Fullerton, 2007).
Lean accounting provides performance measures that support the continuous improvement efforts of employees, encourage lean behavior, and discourage anti-lean behavior. Lean accounting also applies lean management and production principles to accounting processes (Maskell & Baggaley, 2006). Awareness of lean accounting systems and value stream costing (VSC) has grown, due in part to lean seminars, webcasts, and presentations at academic and professional conferences. Those promoting the benefits of major accounting system changes are primarily a handful of early adopters (e.g., Cunningham & Fiume, 2003; Solomon & Fullerton, 2007) and lean accounting consultants (e.g., Maskell et al., 2012), the majority of whom support their claims with anecdotal data drawn largely from their own business or consulting experiences. Even though the volume of practitioner reading material related to lean accounting has increased, robust and unbiased empirical research studies conducted by academics remain sparse. The academic community continues to promote conventional accounting systems and measures, and the professional community is hesitant to make costly and extensive changes to entrenched traditional accounting systems despite their purported shortcomings.
Seeking to advance the debate, van der Merwe and Thomson (2007) called for empirical research to investigate the relationship between the advocated lean accounting processes and lean operations. In response, Fullerton, Kennedy, and Widener (2013) used survey data from 244 US Companies with an interest in lean manufacturing to examine the associations between the extent of lean manufacturing implementation and lean accounting practices. They found a positive relationship between the extent of lean manufacturing implementation and lean management accounting processes. They also found a direct negative relationship between the extent of lean manufacturing implementation and inventory tracking, a conventional management accounting practice, although the inventory tracking relationship was moderated by the extent of top management support for lean. Splitting their sample into low and high support, the authors found that reduced emphasis on inventory tracking was significant only when top management support for lean was high. However, Fullerton et al. (2013) did not test the association between the extent of lean manufacturing, use of lean accounting practices, and organizational performance.
Using data from the same survey Fullerton, Kennedy, and Widener (2014) examined the association between the extent of lean manufacturing, lean management accounting practices and performance. Using a structured equation model, they found that the extent of lean manufacturing practices directly affects firm operating performance. More importantly, lean manufacturing had an added positi...