We hire people because safety and security are two people working the morning 06:00 am. - 18:00 pm. Another one person working at night from 18:00 pm. - 06:00 am.
We employ safety and security on 2 people because one person to work in the morning 06: 00 am. - 18: 00 pm. Another 1 working at night from 18: 00. PM. - 06: 00 am.