  Let $H$ be a compact subgroup of a locally compact group $G$ and let $m$ be
the normalized $G$-invariant measure on homogeneous space $G/H$ associated with
Weil's formula. Let $\varphi$ be a Young function satisfying
$\Delta_2$-condition. We introduce the notion of left module action of
$L^1(G/H, m)$ on the Orlicz spaces $L^\varphi(G/H, m).$ We also introduce a
Banach left $L^1(G/H, m)$-submodule of $L^\varphi(G/H, m).$
