OEC is a dream come true for its founder Mr. Elias Rouayheb . Who started his life in this world of contracting with a very well known company the "CAT" .
In 1964 when OEC was established and registered under the number "7724" in the commercial court of Tripoli , it was directly involved in major project in Lebanon at that time such as part of :

- Refinery of Tripoli(Tank construction)
- Tripoli Fair
- Tripoli Port
- ALICO at Khaldeh.

And so on, during the war until these days .
With its new share holders:
- Chaiban Moawad
– Walid Rouayheb
– Ziad Rouayheb

OEC is still acting and performing in the world of contracting and subcontracting with Lebanese and international companies and through its first class qualifications .OEC launches its project management from its offices it Zgharta and Jounieh and through its site offices all over Lebanon .

OEC and during this past 40 years , was always proud of its participation with the reconstruction of Lebanon .
Proud of our personnel and our teams which is formed of 70 employees including 10 engineers and where in the peak of our works we could reach 400 employers and with an annual turnover for the past 20 years higher then 12 millions dollars a year .
During these years OEC established sister companies such as "Betomix" ready mix company and real estate company and renting company and others .
Our past is honorable, our ambitions are higher and we are looking for a bright future .
We build with pride .