“My question is how to evaluate staff productivity in mass fashion retail store where staff has to do all such as house keeping, replenishments, stock display, maintaining standards and at end customer service. Mass fashion retail store where we sell 3000 to 3500 pcs/day.” S.N.
Retail Management Success
Retail Business Academy
DMSRetail 
Thank you for this question. It comes up time and time again. You evaluate productivity based on sales performance. That can be sales per hour, sales per transaction, units per transaction, conversion, etc.- whatever KPI’s you deem important.
Staff will often complain that they cannot sell because they have so many other things to do. First of all, if all of your associates are expected to sell(service customers) and the other duties then the best thing to do is to compare one associate to another. That way all things are equal. However, it won’t stop there because it could be that all of your associates are more engrossed in tasks than in customer service and selling. So, set some reasonable targets and expect your associates to meet the targets AND accomplish their tasks. You know, without housekeeping, replenishing, cleaning, etc. your customers wouldn’t want to come into your store and your merchandise would not be on the floor to sell. Don’t accept excuses. All the Success!