In Experiment 1, 42 multilinguals were able to maintain native language writing quality and fluency in the presence of unattended irrelevant speech while maintaining a concurrent 6-digit memory load. In Experiment 2, 80 bilinguals reduced fluency during writing with the 6-digit load only. In previous research, over 100 monolinguals of comparable verbal and nonverbal skills in three experiments reduced quality and fluency under both secondary tasks (Ransdell, Levy, & Kellogg, 1996). The results are interpreted in terms of a bilingual skill advantage in suppressing irrelevant information. Possessing fluency in another language may confer long-term working memory benefits during dual-task language conditions for bilinguals and even more so for multilinguals.