Merci mon chien (1999)

Amir, Pakistani, has been working undocumented for six years in the trail area. Jo, his boss, a prosperous trader, constantly promises to regularize his situation. Afraid of the laws that repress illegal work, Jo ends up exchanging Amir for a gambling debt to his colleague Ralph, a very bad businessman who misses everything he does. However, a year later, Ralph's business is booming while Jo experiences only setbacks. Neither of them can imagine that they owe their success to their handyman, Pakistani moreover.