Unwritten Obligations in Agency Contracts

Mujhe ek court mein dekha hai ek agency case, jismein contractor ne agency ke pas case kheenchkar paisa maangne lagaa. Ab yeh aam baat hai, lekin judge ki baat sunne se meri aankhen khul gayin. Voh kehne lage ki, "Agency ek contractor ko apna agent banana ka contract karta hai, toh ismein kya likha hai, 'Contractor agency ke liye kaam karega, par agency bhi contractor ke liye kuch bhi karna nahin hoga'? Kya yeh likhne ki zaroorat thi?" Yeh sach hai, hum log toh kya pata, contract mein likha hi nahi hoga, toh contractor ke paas kya options hain?