The paper describes and analyses data obtained from a survey of the labour force of a tuna cannery in Papua New Guinea. Estimates of the value of employees' work and travel time are obtained and used to calculate the shadow-price of labour under alternative assumptions about the labour market and the economy. The shadow-prices are used to calculate annual employment benefits to the indigenous labour force and to the economy as a whole. These benefits can amount to approximately half of the gross wage bill. Benefits by sex and skill category of worker are also reported. The results of the paper can be used to calculate employment benefits in other similar circumstances in other industries and countries. Copyright 2008 The Author. Journal compilation 2008 Blackwell Publishing Ltd/University of Adelaide and Flinders University.