  Time-evolution of open, dissipative quantum system is a stochastic process
that consists of a series of quantum jumps that take place at random times.
Between quantum jumps quantum system idles for some time in a particular
quantum state. Based on superfermion/superboson formalism and general
Kossakowski- Lindblad master equation for an open quantum system we develop a
method to compute distribution of waiting times between quantum jumps. We
illustrate the use of the theory by computing waiting time distribution for
model Fermi-system in thermodynamic equilibrium.
