A number of developments in socio-economic systems modelling are presented and developed. A dynamic economic input-output model, based on the static Leontief model, is presented. The economic model is used as the basis for the development of a dynamic sociological system model accounting for social stratification and social mobility. The direct and indirect connections of the two models are discussed. Finally, an optimization problem based on the two models and consideration of the labour aspects of the two models is formulated.