 The main objective of the present study is to assess the impact of double fortified salt containing iron and iodine on work performance productivity of women plantation workers in India. Efficacy studies have shown that salt double-fortified with iodine and iron can significantly reduce the incidence rates of iron-deficiency anemia IDA and iodine-deficiency disorders. Double-fortified salt DFS can be prepared by mixing microencapsulated iron compounds into conventionally iodated salt Yuan et al, 2008. Iron deficiency anemia affects the work productivity and physical activity. Many studies have shown that when the individuals with low Hb received iron supplement, their work performance improved markedly. Animal studies have demonstrated that iron deficient anemic rats had a lower work tolerance as measured by oxygen consumption than the adult rats with normal Hb levels Ohira et al, 1981. Several human studies have demonstrated the effect of iron supplementation on endurance capacity and work productivity in women Zhu and Haas, 1997, 1998; Edgerton et al., 1979. Many human studies have also examined the possible linkages between iron deficiency and concurrent cognitive or behavioral outcomes. Iron supplementation effective in reducing iron-deficiency anemia would also result in better behavioral and developmental outcome. Many studies found that IDA had a great influence on cognitive functions in infants and school children Lozoff et al., 2003, 1998 and Friel et al., 2003. However, studies of IDA and cognitive function in adults are few and controversial. 