Bed Companion
1988A businessman’s wife has sex with her driver on a yacht when her husband goes on a business trip.
driver or servant
Flame and Women (1967) aka Honô to onna
1967Tatsuko reveals to her husband that just before their marriage, she had sex with a certain bearded tractor driver in her husband’s summer house when she stayed there.
Paraiso sa Gubat (aka Paradise in the Forest)
2005One wife fucks her young neighbor after her husband leaves for work. Another fucks their driver because her husband is always out trying to pick up another chick.