Bipolar disorder is a chronic illness with substantial psychosocial and occupational morbidity. Several studies have shown that, after a manic episode, the majority of patients with bipolar disorder continue to exhibit significant impairment in role functioning, despite symptomatic recovery (1–6). A recent review of outcome studies concluded that 57–65% of patients with bipolar disorder were unemployed (as compared to 6% of the general population), and up to 80% were considered to have at least partial vocational disability following syndromal recovery from a first-lifetime manic or mixed episode (7). It is generally believed that the depressive pole of bipolar disorder is more consistently and strongly associated with functional disability (8, 9) than is the hypomanic/manic pole (10, 11). However, one of the few large-scale outcome studies of first-episode mania found that while the majority of patients (72%) had achieved symptomatic recovery within two years of their initial hospitalization, less than half (43%) had achieved functional recovery, defined as regaining one’s premorbid occupational and residential status (6). Despite its prevalence and cost in both personal and societal terms, the reasons for persistent work disability in patients with bipolar disorder remain unclear. Factors other than mood symptoms may contribute to poor occupational functioning (12, 13). In particular, there is increasing evidence that impairment in specific cognitive domains, i.e., executive function, verbal memory, attention, and processing speed, persists in some patients with bipolar disorder even during periods of euthymia [(14); (see 15, 16 for meta-analyses)]. Impairments in executive functioning, verbal memory, and speed of processing have been consistently associated with poorer functional outcome in schizophrenia (17–19). There is also mounting evidence that cognitive impairment in these domains may contribute to functional disability in bipolar disorder patients (20–24). A recent review of the literature concluded that in the majority of studies (six out of eight) of euthymic patients with bipolar disorder, poorer cognitive function was associated with worse functional outcome, even after controlling for residual mood symptoms, age, and other clinical variables (25). However, most of these studies used very general measures of functional outcome, such as the Global Assessment of Functioning (GAF) (26), which does not separate clinical symptom severity from functional status in the rating of level of overall functioning. Additionally, the relationship between neurocognitive impairment and the ability to resume normal occupational functioning after an acute manic episode resolves has rarely been studied (27). To our knowledge, only one prior study has examined changes in neurocognitive function over time as a predictor of outcome in bipolar disorder patients (28). In this study, positive changes in composite neurocognitive performance over one year emerged as a significant predictor of improved functioning (as assessed by the GAF) over the follow-up period. The purpose of this study was to assess the cross-sectional and prospective longitudinal association between neurocognition and occupational function in subjects with bipolar disorder who had recently achieved symptomatic recovery following a manic episode. Using the Life Functioning Questionnaire (LFQ) (29), a gender-neutral measure of occupational function that assesses both quality and quantity of work impairment, we sought to answer the following questions: (i) Does neurocognitive function at the time of symptomatic recovery from a manic episode differentiate patients who achieve occupational recovery from those who do not? (ii) In those who do not achieve occupational recovery concurrently with symptomatic recovery, does neurocognitive function at the time of symptomatic recovery predict short-term occupational recovery? (iii) Is change in cognitive function, either globally or in specific domains, associated with short-term occupational recovery? Given prior findings, in both patients with schizophrenia and bipolar disorder, which indicate deficits in executive functions, verbal memory, and speed of processing are associated with poor functional outcome, we hypothesized that better baseline neurocognitive function in these domains would be associated with concurrent occupational recovery, and that cognitive improvement in these domains over time would be associated with occupational recovery over the follow-up period.