How do you deal with an employee who takes too many breaks during working hours?

an employee takes too many breaks during working hours, we should look after him, ask the reason of taking breaks and should solve the problem...

The first step would be to determine the reasons. This may open many possibilities where everybody can reach common ground to the benefit of the company.  In many cases employees feel neglected or there are simply not sufficient challenges to keep them occupied. Draft a short employee survey to determine similar departmental problems or shortfalls.  Introducing short time management workshops to interact with employees in a fun way will prove fruitful.

Have a one to one meeting and make them to develop a responsible attribute in them. Thanks.

Many companies have employees who smoke, and many companies allow employees to take some sort of break or breaks during the workday. The question often arises whether employees who smoke must be given extra breaks. Some employers even wonder whether smoking is a protected disability that must be accommodated under the Act. The answer to both questions is "no". Employers in the vast majority of situations do not have to give breaks during the day, so if a company does allow breaks, it can put whatever strings it wants to on those breaks. That includes limits on how long the breaks can be, how many breaks occur during the day, and where the breaks can or cannot be taken. Thus, if an employee is normally allowed two breaks per eight-hour shift, the employer can legally deny any extra breaks for smoking.

I would agree with the provided answers.. Different helpful opinions ... Thank You

First of all, consider what you are observing.  Do they complete enough work during the day?  What do they do during these breaks?  What effects does this have on other staff?  In other words, is there a real problem here, and if so, what is it?  As a manager/employer what you should care about is an employee's output: whether they are sitting at their desk or not at any given moment is secondary.

Assuming that the real problem is that they are not doing enough work, the obvious step is to have a quiet talk with them about it to find out why they take more breaks.  They may have a personal or other difficulty that they are trying to manage, or they may be suffering from a lack of motivation for some reason.  Once you understand what is really going on, you can plan the next step.

Initially on the partition on which the employee works be discussed

And shows that the employee responsible for the case and the extent of the impact on the work

Then wakes shall not repeat it and not subjected to punishment.

I fully agree with the answers been added by EXPERTS.....Thanks.