European Journal of Business and Management www.iiste.org ISSN 2222-1905 (Paper) ISSN 2222-2839 (Online) DOI: 10.7176/EJBM Vol.11, No.8, 2019 1 The Mediating Influence of Employee Behaviour on the Relationship Between Strategic Planning and Competitive Advantage of Large Manufacturing Firms in Kenya Jackson K. Maingi 1* Zachary B. Awino 2 Peter O. K’Obonyo 3 Ganesh P. Pokhariyal 4 Abstract Several studies have been carried out in the past to find out how strategic planning and competitive advantage are connected and the causes of differences in competitive advantage among firms. Scholars have argued that competitive advantage can emanate from either internal or external sources and is usually in several forms which include; valuable resources, the position held within the industry, position within the marketplace, operating at lower costs than rival firms, differentiation, capabilities and dynamic capabilities. The debate on what causes differences in competitive advantage is still on. This study sought to establish the mediating influence of employee behaviour on the relationship between strategic planning and competitive advantage of large manufacturing firms in Kenya. The study was underpinned by the competitive advantage typology of Michael Porter, the resource- based theory, dynamic capabilities theory, and goal-setting theory. The study used a positivist research paradigm and a cross-sectional survey design. This was a census study from 124 large manufacturing firms in Kenya. Out of the 124 firms, data on strategic planning, employee behaviour and competitive advantage was collected from 122 of the firms representing a response rate of 98.4%. The data was interpreted using a 5-point Likert type questionnaire. The data received was analysed using both descriptive and inferential statistics. Reliability tests returned an average Cronbach Alpha Value for the three variables that is strategic planning, employee behaviour and competitive advantage, of 0.86. Hypotheses were tested using both simple and multivariate regression analysis as well as hierarchical analysis for mediation. The findings indicate that overall strategic planning has a statistically significant influence on competitive advantage and that employee behaviour mediates completely the relationship between strategic planning and competitive advantage (R 2 =0.751, p-value<0.05). The study concluded that the relationship between strategic planning and competitive advantage is completely mediated by employee behaviour. The study further recommended that employees’ behaviour should be strategically aligned to the goals and objectives set in the strategic plan and that they should be committed fully to the ideals of the firm in order for the firm to attain and sustain its competitive advantage position. Keywords: strategic planning, competitive advantage employee behaviour, lower costs, differentiation, capabilities, dynamic capabilities DOI: 10.7176/EJBM/11-8-01 Publication date:March 31 st 2019 1. Introduction The firms Competitive Advantage (CA) can be derived from many areas (Reed & DeFillipi, 1990). Barney (1991) and Barney and Hesterly (2012) have defined CA at the firm level whereby different firms implement strategies which are value creating and these strategies are not at the same time being implemented by rival firms. Similarly, Porter (1991, p. 104) has asserted “that there are two types of CA, one that is founded on reducing costs and the other founded on differentiation.” Collis and Montgomery (1994) have used the resource-based view to analyze sources of competitive advantage. “Defining the concept of sustainable competitive advantage (SCA) is even more risky than defining competitive advantage” (Gannon, Lynch, Holden & Hannington, 2010, p. 6). According to Porter (1985) and Hill and Jones (2004), sustained competitive advantage is defined as the key foundation for a firm to perform at an above-average position in the long term. Some scholars have argued that the basic assumption upon which sustained competitive advantage is established can only be displayed in a time continuum (Porter, 1985; Hill & Jones, 2004), but other scholars (Barney, 1991, p.102) disagree and assert that “sustainability refers to the capability of the organization to have an inimitable strategy which is difficult to be duplicated by others.” Different writers have developed strategy typologies that bestow organizations with the capacity to achieve a position of competitive advantage. The two most prominent typologies are “the four strategic categories” by Miles and Snow (1978, p. 550); these being: “prospectors, defenders, analyzers and reactors” and the three generic strategies by Porter (1980, p. 35); these being: “cost leadership, differentiation and focus. This study has emphasized on Porter’s strategy types as ones to enable a firm to achieve and sustain competitive advantage. A strategy based on low cost demands that the firm should be the one producing at the lowest cost in that particular industry and not merely one amidst other firms contending for that position (Porter, 1980, p. 35; 1985). This strategy entails audacious establishment of efficient scale-facilities, aggressive follow-up of cost reduction measures from experience, tight cost and overhead control, and minimizing costs in all areas of the organization