The present investigation deals with the deformation of a micropolar elastic solid with void overlying a semi-infinite inviscid fluid subjected at the plane interface due to various sources. Laplace and Fourier transform techniques have been used to solve the problem. The expressions of the displacement components, stress, couple stress and change in volume fraction field are obtained in the transformed domain. As an application of the approach (i) concentrated force (ii) uniformly distributed force (iii) linearly distributed force (iv) moving couple have been taken to illustrate the utility of the approach. A particular case of interest have been deduced from the investigation.