Managers communicating with Employees

One thing that I found to be useful from a past job experience that definately helped my managers communicate with the employees was through a shift meeting. Before each shift the managers would get all of the servers together either in the BOH (back of house) or outside the restaurant to tell us about any changes to the menu or daily specials that we should know about. They also incorporated positive reinforcement to make the shift meeting kind of like a pep talk. They also would encourage us to have a great shift. So that might be an idea.
As far as owners promoting their business to companies we could have business cards made up which we could hand out to companies inviting them to come eat at our restaurant, however, actually having meetings will only cost servers and the restaurant time and money. What we could do is allow those companies to have call ahead seating or reservations unlike other guests. Basically we have to have some sort of incentive for them to want to come to this restaurant.