COVID-19 booster vaccinations at workplaces started in earnest Monday, with the government hoping to accelerate the rollout campaign to 1 million shots a day by the end of the month.

All Nippon Airways Co. and Japan Airlines Co. together administered third shots to 242 of their employees at Haneda Airport in Tokyo. ANA and Japan Airlines said they plan to give the booster to 20,000 and 17,000 of their group employees and others, respectively, over the next few months.

“I am relieved to have received the inoculation, as I want to continue providing an environment where our customers can feel safe and secure,” a female cabin attendant who received the booster on Monday told a TV Asahi news program.