Despite the employee behaviour predictors identified as stimulants of functional and pro-social behavour, there is yet empirically assertive position on what manager selfless postures are likely to attract extra-role behaviour among work members in the Nigerian public health sector. This study therefore investigate the empirical relationship between manager altruism and workplace spontaneity in the public health sector. The study had through a questionnaire instrument generated data from a sample of 118 respondents. The data were analyzed using multiple regression which indicated that 38% of the variation in workplace spontaneity is explained by the manager altruism behaviour. The study concluded that manager altruism predicts significantly employee spontaneity behaviour in the public health sector. It recommends that managers should be rather altruistic than rely on structural niceties of work as behaviour predicting instrument.

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