Since the appearance of the coronavirus pandemic, the activity of several companies has experienced a remarkable decline. This decline is due especially to several reasons linked to several social, tourist, and preventive factors.

To do this, to find solutions to minimize losses and achieve the objectives, and above all to ensure the continuity of the desired results, we opted for several management methods such as six-Sigma and Kaizen.

In this article we will study the case of the decline in activity in large-scale distribution, knowing that during periods of confinement, sales of hypermarkets recorded a strong regression in Morocco, Since the Ratio of all the indicators of management and all expenses of a hypermarket is always linked to sales excluding taxes, this is why they were led to optimize their expenses and review their management method to alleviate the loss.

In this article, we will see the reasons for the decline in activity and the action plans to be taken to optimize the expenses of hypermarkets using the LSS (lean six sigma) method.