If you plan on doing business in Iran appointments should be made in advance both via telephone and in writing. Prior to arriving in Iran telephone again just to confirm time and place.

Business hours are Saturday to Thursday 9 a.m. - 5 p.m. Lunch is usually an hour at around 1 p.m. Friday is a holiday. No business will take place so either try and avoid it or ensure you can use it to see some of Iran.

There are a few key times to avoid in Iran. No-Rooz is the major holiday for Iranians. Although its roots are in Zoroastrianism, this New Year celebration is an integral part of Iranian culture. All offices, businesses, shops, etc will close for 2-3 weeks.

Other times to avoid doing business are Ramazan (the month of fasting), Eid-e Fetr (festival celebrating the end of Ramazan), Eid-e Ghurban (celebrating the end of the pilgrimage) and Ashura (the tenth day of Muharram).

Punctuality in Iran is rare. However, it will be expected of you. If you are doing business with government officials in Iran be prepared to be kept waiting. The administration and bureaucracy in Iran can be chaotic, meaning that officials may need to address an important issue before seeing you. Be patient and courteous. If you like tea, do not be afraid to ask for lots of it!

Although many Iranians in business and in the higher levels of government will have a good understanding of English, it is best to arrange for your own interpreter to accompany you.

At the beginning of any meeting engage in niceties and ask after people's health, families, work, etc. Wait for your counterpart to initiate the change in conversation to business matters.