I have learned that there is specific way to great people at work. Now it seems that the 안녕 greetings are the generic ones. There is specific greetings for people in the workplace or if you are in s similar situation (case where there is work to be done).
수고하습니다 (su-go-ha-sum-ni-da) is saying hello to someone who is working
수고하세요 (su-go-ha-se-yo) is saying goodbye to someone who is working
수고하겼어요 (su-go-ha-kyo-sso-yo) is like saying thank you for helping me or well done
Word for the day 집 (jip) which means house.