How much an administrative assistant gets paid depends on the industry and level of responsibility. Administrative assistants work in a wide variety of industries, performing administrative and clerical tasks. Administrative assistants in the postal service industry are among the highest paid and can make more than $60,000 a year. The lowest paid administrative assistants earn an average of $28,000. Most assistants make somewhere in between these two figures. Some of the duties of an administrative assistant include researching, planning meetings, making travel arrangements, and managing electronic and paper file systems.