In order to obtain series of occupied population of Baja California and to assess the impacts of the national migration in the occupation levels those corresponding to five municipalities were estimated by using weights of the occupied population against the total taking as reference the report of employed population ENOE/INEGI for Baja California and Tijuana in the 2005-2015 period. The results indicate a common behavior of the occupation in the metropolitan zone Tijuana-Tecate-Playas de Rosarito, while Mexicali and Ensenada show a differentiated behavior. Also, the changes in the economically active population, the occupied population in the regions of the country as well their impact in the occupation level in the State and each one of their municipalities are analyzed, in a scene where increases in the unemployment rate are imported from other States ejectors of labor force.