A midnight curfew on restaurants and other businesses was scrapped on Monday, along with a cap of 10 people allowed to gather. From next week, people will be allowed to eat snacks in cinemas and other indoor public facilities such as stadiums.
People are still required to wear masks, however, with the government planning to review whether to lift a rule for masks outdoors in two weeks.
The relaxation of the rules come as the number of coronavirus cases in South Korea fell to 47,743 on Monday, the lowest since February 9, after hovering at more than 620,000 a day in mid-March.
Some rules, however, remain including mandatory quarantine for unvaccinated inbound travellers and negative PCR tests for the fully vaccinated.
South Korea has largely managed to limit deaths and critical cases through widespread vaccination, and it has scaled back the aggressive tracing and containment efforts that made it a mitigation success story from most of the first two years of the pandemic.
Nearly 87 per cent of the 52 million population are fully vaccinated, with 64 per cent having also had a booster, according to Korea Disease Control and Prevention Agency data.
In line with the easing of the rules, companies are gradually returning to their offices.
LG Electronics said it had reduced the proportion of employees working from home to 30 per cent from 50 per cent, while Samsung Electronics said it had yet to implement its back-to-office plan and the public sector is also awaiting new government guidelines.
The government had recommended workplaces with 300 or more employees adopt flexible working hours and have 10 per cent of staff work from home.
