The article substantiates that achievement of certain economic security level set by management for the current time point is a necessary but insufficient condition of further development of the enterprise. When the mentioned condition is fulfilled, the degree of its personnel’s innovation activity should also be considered. The article presents further development of the methods of assessing the level of the dependent part of economic security of the enterprise's stakeholders, including the personnel, which, unlike others available, is based on estimation of outstanding expenditures. Innovation activity of the personnel is determined to depend on their attitudes to innovations. The article presents a developed economic and statistic toolkit of assessing the personnel’s probable attitudes to implementation of innovations considering the degree of recognizing the necessity of innovations and awareness of the enterprise’s activities in terms of innovations. The level of probable (expected) attitudes to innovations is taken as a basis for a combined classification of particular personnel categories. The article suggests a matrix approach to determining the type of enterprise development based on comparison of the level of economic security for the current time point and the personnel’s innovation activity.