The computerised farm labour budgeting system known as PUBAS and developed
at IMAG-DLO, is currently being used by insurance companies. They can work
with relatively rough labour figures. For use in a research environment, ho
wever, the current version of this labour budgeting system is not sufficien
tly accurate. The present PUBAS version cannot answer questions relating to
the real limiting conditions of the labour demand as these relate to work
organisation. By extending PUBAS with a more detailed level of input and ou
tput, more facilities of the underlying labour budgeting model can be made
available to users of the PUBAS user interface. This paper provides an over
view of useful extensions and the way they will be implemented in the exten
ded version of PUBAS.