The failure of e-commerce initiatives, impact of healthcare reforms and loss of market share to Costco poses serious threats to Walmart’s growth. Walmart US’ growing online sales are also cannibalizing on Sam’s Club’s market share, which can end up hurting Walmart’s overall growth. Furthermore, a recent survey found that most of Walmart’s walk-in customers prefer e-commerce portals like Amazon and eBay to shop online, which can lead to a loss of customers for Walmart if its e-commerce initiatives fail to take off and net more customers. In addition to these factors, employee dissatisfaction is high at Walmart due to the lower wages if offers. This has had a significant negative effect on its customer service, which can result in loss of even more customers to competitors like Costco.