What are the methods that reduce the stress suffered by the employee?

The stress suffered by the employees can be reduced by effective automation.
In any business line the regular work covers a larger amount of time and these regular work does not allow the employees to concentrate on the important issues.
Most often the important issues are completed at11th hour, which causes the stress to the employees.
With the effective automation the employees will be free from the regular work and can concentrate on the important issue.
Trust this will help.

If you overload an employee he/she will get stressed.
Share the workload evenly amongst the staff.
Some employees are afraid to admit that they are stressed but we as managers should be looking for the signs to help them i.e.
Tiredness, being quick tempered, making lots of mistakes, not working as part of a team etc

1st of you should know why your employees are stress what is going in your department means that this stress for work load / for increment  / for promotions  etc.
 you have to find for secrete  for this stress.