#268 1916 · Piggly Wiggly (Clarence Saunders) · Grocery retail
A Memphis grocer let customers walk the aisles and serve themselves, and clerks stopped being the bottleneck
the problem
Paying clerks to fetch every item for every customer was eating grocers' thin margins
background
Grocers in the 1910s ran on full service: a customer read a list to a clerk, who walked the stockroom gathering each item. It was slow, and the labor cost scaled with every customer served, at a time margins on packaged food were already thin. Saunders, a Memphis wholesaler and grocer, wanted to cut that cost, but a store that simply hired fewer clerks would just mean longer waits and worse service.
His answer restructured the transaction itself. He patented a store design — turnstile entry, a fixed aisle path past shelves of priced, branded goods, checkout at the exit — that let the customer do the browsing and picking a clerk used to do, and marketed it as a novelty rather than a downgrade: shoppers could see and touch everything in the store instead of asking for it.
what everyone would do
Hire fewer clerks to cut labor cost, or push existing clerks to serve customers faster. Both make service worse — longer waits, more mistakes — without touching the actual problem: labor cost that scales with every individual customer, since a clerk still has to personally fetch each item for each person regardless of how many clerks are on the floor.
what they saw
Saunders saw that fetching an item off a shelf wasn't a task that specifically required a clerk, it was a task the customer was fully capable of doing themselves, if the store removed the reasons a clerk had been necessary in the first place — unclear layout, unclear pricing, no direct physical access to the goods. The fix wasn't cutting labor, it was redesigning the store so the customer could do the labor without needing to be told they were doing it.
the move
Clarence Saunders patented a store layout that turned shopping inside out: customers entered through a turnstile, walked a maze of aisles stocked with priced, pre-packaged goods, and picked their own items before paying at a checkout — the clerk's job shifted from fetching one customer's list to stocking shelves for all of them.
why it works
Full-service grocery labor cost scales directly with customer count, since each customer needs a clerk's individual time to fetch their list. A store built around a controlled path, priced and pre-packaged goods on open shelves, and one checkout point converts that per-customer labor into a one-time cost of stocking shelves that serves every customer who walks through regardless of volume. Because customers could see, touch and choose products directly, shopping stopped requiring clerk time at all except for stocking and checkout, breaking the link between customer volume and labor cost that was eating grocers' thin margins. Marketing the format as a novelty — shoppers get to browse and touch everything — rather than a downgrade in service is what let customers adopt it willingly, which is why it scaled to over 1,200 franchised stores by 1923 instead of being read as a loss of service.
the payoff
The first Piggly Wiggly opened in Memphis in September 1916; Saunders began franchising the format within a year, and by 1923 the chain ran over 1,200 stores doing roughly $100 million in groceries — the self-service format every supermarket since has copied.
where it breaks
The model only works when the product can be safely and practically self-selected by an untrained customer — goods requiring expert judgment, safety handling, or customization don't transfer to self-service without added infrastructure. It also depends on real upfront investment in clear layout, legible pricing, and a controlled customer path; self-service without that redesign produces confusion and theft rather than efficient shopping, since the whole model depends on customers being able to navigate and choose confidently on their own. And it requires customers to actually accept doing work themselves that they were previously paying, implicitly, someone else to do — a customer base that values personal service and reads the shift as a downgrade rather than a novelty would resist the format regardless of its cost efficiency.
what came after
Saunders was not the literal first to try self-service, but his patented, franchisable version was the one that scaled — over 1,200 stores by 1923, and the template every modern supermarket, from Kroger to Walmart's grocery aisles, still runs on.
references
- [1]Tennessee Encyclopedia — Clarence SaundersTennessee Encyclopedia, 2018tennesseeencyclopedia.net
- [2]Economic Hardship Reporting Project — The Secret Anti-Socialist History of SupermarketsEconomic Hardship Reporting Project, 2022economichardship.org