If we assume the owner and manager are not the same, then this should be a Principal-Agent Relationship. In this case, the owner pay wage to the manager, and the manager put effort into management and monitoring. To the owner, the reward paied to the manager is a kind of cost, just like the wages paid to the workers. Moreover, the owner and the manager have their own objectives: the owner maximizing profit (assumed); the manager maximizing his utility, which depends on the monetary reward given by the owner and his effort put into management.