Industry leader Seven-Eleven Japan Co has shortened business hours at over 200 additional stores since fiscal 2020 at the request of franchise owners, while Lawson Inc has implemented similar measures at about 100 more stores. Among the top three Japanese convenience chains -- Seven-Eleven Japan, Lawson and FamilyMart Co -- the proportion of stores with shortened business hours was relatively low at around 8 to 10 per cent, compared with other smaller operators. Seicomart, the largest convenience chain in Hokkaido, northern Japan, logged the highest rate of stores cutting business hours at 87 per cent, followed by Poplar Co, headquartered in Hiroshima, western Japan, at 79 per cent. "We are taking measures by taking into consideration sales and sustainability," said an official of Ministop Co, which allowed 22 per cent of stores to run shorter business hours.