Does the employer pay for 8 hours or 24 hours? An employee and an employer have agreed on 8 hours of work. Then why does the employer want to interfere beyond 8 hours? If the employer's work is suffering due to the extra work of the employee, then ask the employee to leave the organization and hire a new employee.
Why Do People Go for Part-Time Work?
Obviously, for more earnings. Give extra work and extra money to the employee. They will not go and work part-time, and the employer can stop work after office hours.
Regards,
Manjay