diff --git a/ts/business/contact.ts b/ts/business/contact.ts
index 615c220..cf082da 100644
--- a/ts/business/contact.ts
+++ b/ts/business/contact.ts
@@ -47,14 +47,38 @@ export type TPerson = TContactEnvelope<
     };
   }
 >;
+
+type TCompanyInCreation = {
+  status: "planned" | "founding";
+};
+
+type TCompanyActive = {
+  status: "active";
+  foundedDate: general.IDate;
+};
+
+type TCompanyInLiquidation = {
+  status: "liquidation";
+  foundedDate: general.IDate;
+  liquidationDate: general.IDate;
+};
+
+type TCompanyClosed = {
+  status: "closed";
+  foundedDate: general.IDate;
+  liquidationDate: general.IDate;
+  closedDate: general.IDate;
+};
+
+type TCompanyStatus =
+  | TCompanyInCreation
+  | TCompanyActive
+  | TCompanyInLiquidation
+  | TCompanyClosed;
+
 export type TCompany = TContactEnvelope<
   "company",
-  {
-    registrationDetails: TRegistrationDetails;
-    foundedDate: general.IDate;
-    closedDate: general.IDate;
-    status: "planned" | "founding" | "active" | "liquidation" | "closed";
-  }
+  { registrationDetails: TRegistrationDetails } & TCompanyStatus
 >;
 
 export type TContact = TPerson | TCompany;