translate English to French: However, the amount claimed does not include costs of labour, which explains why the sum of the amount already recovered (KWD 390,980) and the amount claimed (KWD 277,102) is substantially less than the contract price.
Cependant, elle ne comprend pas les frais de main-d'œuvre, ce qui explique que la somme du montant déjà perçu (KWD 390 980) et du montant réclamé (KWD 277 102) soit sensiblement inférieure au prix du contrat.