  We give necessary and sufficient conditions for the boundedness of
generalized fractional integral and maximal operators on Orlicz-Morrey and weak
Orlicz-Morrey spaces. To do this we prove the weak-weak type modular inequality
of the Hardy-Littlewood maximal operator with respect to the Young function.
Orlicz-Morrey spaces contain $L^p$ spaces ($1\le p\le\infty$), Orlicz spaces
and generalized Morrey spaces as special cases. Hence we get necessary and
sufficient conditions on these function spaces as corollaries.
