Abstract: A ballast case for electronic fluorescent lamp. The ballast case makes good a deficiency of potting compound even when deficient amount of potting compound is charged in the ballast enclosure, thus to facilitate the potting compound charging work and to effectively prevent generation of noise caused by overvoltage of ballast, and to effectively protect the ballast and varieties of parts. The ballast case comprises a rectangular box type ballast enclosure charged with potting compound and having the ballast and the varieties of parts therein, and a rectangular plate type cover covering the ballast enclosure. The cover has an embossed section for making good the deficiency of potting compound. The embossed section is formed by embossing an area of flat surface of the cover so that the embossed section corresponds to sizes and arrangement of the ballast and the varieties of parts.