In Business is it important to make eye contact 100% percent of the time?

The old saying that “eyes are a reflection of your inner self” holds true in most cases.

A big part of eye contact is building trust. A person with whom you are talking to will be more likely to trust and respect you as eye contact indicates an openness in communication. It also tells the other person “Hey, I am confident and self-assured, you can trust me”. So if you hope to land that big contract or project, be trust-worthy. It makes the conversation more personal as opposed to speaking to a crowd.

Keeping eye contact with the person you are talking to indicates interest and saying to the person “You are important and I am listening”.

Not neccessarily and not really, a lot of business, agreements and deals are made by phone calls, e mails or through agents. 

It does help but it depends on circumstances. 

I agree with Divyesh's answer & I personally prefer regular eye-contact as a testimony of honesty, trustworthiness & directness. I wouldn't say100% of the time, though, but most of the time.  At times, it may be more appropriate to avoid making eye contact look more like "staring". I do think however that this is strongly culture-related & culturally variable.

I welcome feedback on this from those who have more experience, but I think in some cultures like Far East Asia for instance, a certain type of eye-contact can be viewed as intrusive, inappropriate or impolite, even in business dealings which are typically a bit more vague & inexplicit compared to say, Western business culture. Do you agree?

What do you do if the person is wearing sunglasses ?

IN BUSINESS CALL ITS TRUE BUT other wise tou may look on other side,,,lolz

Some eye contact is essentially required and not100% as it may make the listner feel uncomfortable.  For any type of communication that is Business or Private, the following are of high importance for successfully meeting the purpose of communication :

1) Language and content to match with the level of understanding of the listner.

2) Content should be to the point, brief, of relevence and interest to the listner.  

3) Pitch, Tone and Body Language should be polite and respectful. It is true that70% of communication is Non-verbal. 

4) Before closing any communication of importance, taking feedback from the listner ensures that the matter has been well understood and agreed upon.

It is very important to know that we all come from different nationalities with different rules. Some see it as rude and disrespectful to look a person in the eyes other see the direct opposite. And tat is just in my country. Also most deals are done over the phone and by mail. It is more important to be respectful and professional.

Yes I agree100% eye contact is necessary for doing effective work or business due to sustainability of business.

Eye contacts will not be needed for100% time. I use eye contacts for the following2 reasons

1. To make sure the listerner trusts you

2. To show that you are confident

During long talks, I do eye contact few times and during addressing a gathering, I do eye contact with as many people as possible for just a second or two. This actually makes people more alert and attentive.

First , There are nothing all over the world with100 % , by sequence we can say it differ from person to other thats for sure and the situition each face as well and the time.

Eye contact is just a part of the body langue to win the confidence of the listener.100% eye contact ends up in giving a feeling of staring at which is not a conducive gesture.