A government survey on convenience store operations showed Tuesday that most store owners are overworked, with 85 percent of them saying they work six days or more a week.The Economy, Trade and Industry Ministry has been surveying working conditions in the convenience store industry as problems associated with 24/7 operations and long working hours have surfaced amid the country's labor crunch.The survey was conducted in August on 3,645 franchise store owners and 500 employees.According to the survey, 66 percent of store owners said they have "less than a day" off from work per week, and 19…READ FULL ARTICLE