Evidence that Osama bin Laden never had anything to do with Saudi bin Laden Construction?

Does the fact that not one single biographer makes any reference mentioning him ever working for the company count?

Time line indicates Osama bin Laden leaving University in 1979 and going off to Pakistan to set up training bases for Mujahideen to help them in their fight against the Soviets. From that point onwards his life, whereabouts and his activities are fully documented and nowhere is there any reference to him working for Saudi bin Laden Construction.

Not really all that clear what Osama bin Laden's degree qualification was. Mentioned as being Business Administration and/or Civil Engineering with two different years being mentioned 1979 and 1981 (The latter is impossible as he was in Pakistan at that time).

Quite early on in this thread Jack Campin put forward Osama bin Laden as an example of a businessman and a leader of a nation. IIRC his words were that Osama bin Laden was "an influential businessman and statesman" - I merely pointed out that Osama bin Laden had never been any of those and had certainly never been the leader of a nation.