The objectives of the study were to assess the effect of warm compress on pain perception during first stage of labour among primigravida mothers and to find out the association between pain perceptions during first stage of labour among primigravida mothers with selected socio-demographic variables. Quantitative research approach, pre-test - post-test control group design was used. 60 samples were selected, where 30 in experimental group and 30 in the control group, by non-probability purposive sampling method. Pretest and post-test pain scores were assessed by using Numerical Pain Rating Scale. The results shows that there was a significant difference in the level of pain perception after warm compress between the primigravida mothers of the experimental group and control group and there was a significant association between pre-test pain score and selected socio-demographic variables like age and occupation. The study concluded that warm compress was effective in reducing labour pain.