Employees who work at night shift will start and stop work does not match, the details are as follows:
Start time as follows:
1. Beam line & part shop 18.30 pm.
2. Welder 19.30 pm.
The work of each department as follows:
1. Work at 05.00 pm to 7 persons.
2. Quit work at 06.00 pm of 17 persons.
3. Quit the job at 07.00 pm 4 persons.