1 I would say 'workers' or 'staff' rather than coworkers here.
2 This needs changing: which makes that the knowledge of a person can not be capitalized for the grow of the organization;
which means that a person's knowledge cannot be capitalized for the growth of the organisation'
3 this person leaves the organization, he takes also his knowledge away
Personally, I don't like the use of 'his'here, though it is correct grammatically.
4 start almost from scratch (no definite article)