This addendum, Useful worksheets to guide the planning of a SocMon assessment or monitoring programme, is an update to the Global Coral Reef Monitoring Network (GCRMN) Socio-economic Manual for Coral Reef Management (Bunce et al. 2000). These worksheets were developed by the Centre for Resource Management and Environmental Studies (CERMES) at the University of the West Indies, Cave Hill Campus, Barbados – the regional SocMon node for the Caribbean. The worksheets have been used in numerous SocMon trainings facilitated by CERMES to guide SocMon practitioners in the thorough development of a site-specific socio-economic monitoring plan for initiating a SocMon assessment. The worksheets can be adapted to global SocMon region as required.