  In this work, we consider extensions of the dual risk model with proportional
gains by introducing a dependence structure between gain sizes and gain
interrarrival times. Among others, we further consider the case where the
proportional parameter is randomly chosen, the case where it is a uniformly
random variable, as well as the case where we may have upwards as well as
downwards jumps. Moreover, we consider the case with causal dependence
structure, as well as the case where the dependence is based on the generalized
Farlie-Gumbel-Morgenstern copula. The ruin probability and the distribution of
the time to ruin are investigated.
