Can the company issue the termination letter and pay notice-in-lieu to the staff and request the staff to leave immediately?

Can the company issue the termination letter and pay notice-in-lieu to the staff and request the staff to leave immediately?

The company can request the employee to leave immediately as long as they have paid the employee the notice in lieu.

For example,
Notice period : 1 month
Salary: S$2,000
Termination Date: 1 December

To terminate the employee, the company can either give the employee notice that he/she is required to work until 31 December, or the employer can give the employee 1 month salary (paid until 31 December) and ask the employee to leave immediately on 1 December.