Update to remove grammar errors: This causes the employee to have low morale during work, and thus reduces work efficiency when the aim of the CCTV is otherwise.
The employee is not able to work in the office because of the lack of time.
Correct: The employee is not able to work in the office because of the lack of time.
Correct: The employee is not able to work in the office because of the lack of time.
Correct: The employee is not able to work in the office because of the lack of time.
Correct: The employee is not able to work in the office because of the lack of time.
Correct:
The employee is not able to work efficiently because of the lack of time management skills.
Correct: The employee is not able to work efficiently because of the lack of time management skills.
The employee is not able to work efficiently because he/she is not able to manage his/her time.
Correct: The employee is not able to work efficiently because he/she is not able to manage his/her time.
The employee is not able to work efficiently because he/she is not