diff --git a/proto/Employees/Employee.proto b/proto/Employees/Employee.proto
index 61f651fb..7268b280 100644
--- a/proto/Employees/Employee.proto
+++ b/proto/Employees/Employee.proto
@@ -11,6 +11,7 @@ message Employee
 	required string Position = 3;
 	required bool CanBeInvitedForChat = 4;
 	optional Timestamp CreationTimestamp = 5;
+	optional EmployeeExternalIdentity ExternalIdentity = 6;
 }
 
 message EmployeePermissions {
@@ -31,3 +32,8 @@ message EmployeeList {
 	repeated Employee Employees = 1;
 	required int32 TotalCount = 2;
 }
+
+message EmployeeExternalIdentity {
+	optional string ExternalId = 1;
+	optional string Email = 2;
+}
diff --git a/proto/Employees/EmployeeToCreate.proto b/proto/Employees/EmployeeToCreate.proto
index 3e20876b..70699855 100644
--- a/proto/Employees/EmployeeToCreate.proto
+++ b/proto/Employees/EmployeeToCreate.proto
@@ -14,6 +14,7 @@ message EmployeeToCreateCredentials
 {
 	optional EmployeeToCreateByLogin Login = 1;
 	optional EmployeeToCreateByCertificate Certificate = 2;
+	optional EmployeeToCreateBySsoProvider SsoProvider = 3;
 }
 message EmployeeToCreateByLogin
 {
@@ -27,3 +28,10 @@ message EmployeeToCreateByCertificate
 	optional string AccessBasis = 2;
 	optional string Email = 3;
 }
+
+message EmployeeToCreateBySsoProvider
+{
+	required string Email = 1;
+	optional FullName FullName = 2;
+	required string ProviderId = 3;
+}
diff --git a/src/ComDiadocApi.cs b/src/ComDiadocApi.cs
index 4c55dbdc..9115532e 100644
--- a/src/ComDiadocApi.cs
+++ b/src/ComDiadocApi.cs
@@ -762,6 +762,7 @@ FileContent GetContent(
 			int contentType = 0);
 
 		Employee GetEmployee(string authToken, string boxId, string userId);
+		EmployeeList GetEmployeesByExternalId(string authToken, string boxId, string externalId);
 		EmployeeList GetEmployees(string authToken, string boxId, int page = 0, int count = 0);
 		Employee CreateEmployee(string authToken, string boxId, [MarshalAs(UnmanagedType.IDispatch)] object employeeToCreate);
 		Employee UpdateEmployee(string authToken, string boxId, string userId, [MarshalAs(UnmanagedType.IDispatch)] object employeeToUpdate);
@@ -1166,6 +1167,11 @@ public Employee GetEmployee(string authToken, string boxId, string userId)
 			return diadoc.GetEmployee(authToken, boxId, userId);
 		}
 
+		public EmployeeList GetEmployeesByExternalId(string authToken, string boxId, string externalId)
+		{
+			return diadoc.GetEmployeesByExternalId(authToken, boxId, externalId);
+		}
+
 		public EmployeeList GetEmployees(string authToken, string boxId, int page = 0, int count = 0)
 		{
 			return diadoc.GetEmployees(
diff --git a/src/DiadocApi.Async.cs b/src/DiadocApi.Async.cs
index accceeec..2a613735 100644
--- a/src/DiadocApi.Async.cs
+++ b/src/DiadocApi.Async.cs
@@ -799,7 +799,7 @@ public Task<DocumentList> GetDocumentsAsync(string authToken, DocumentsFilter fi
 		{
 			return diadocHttpApi.GetDocumentsAsync(authToken, filter);
 		}
-		
+
 		public Task<DocumentList> GetDocumentsV4Async(string authToken, string boxId, GetDocumentsV4Request request)
 		{
 			return diadocHttpApi.GetDocumentsV4Async(authToken, boxId, request);
@@ -1640,6 +1640,14 @@ public Task<Employee> GetEmployeeAsync(string authToken, string boxId, string us
 			return diadocHttpApi.GetEmployeeAsync(authToken, boxId, userId);
 		}
 
+		public Task<EmployeeList> GetEmployeesByExternalIdAsync(string authToken, string boxId, string externalId)
+		{
+			if (authToken == null) throw new ArgumentNullException("authToken");
+			if (boxId == null) throw new ArgumentNullException("boxId");
+			if (externalId == null) throw new ArgumentNullException("externalId");
+			return diadocHttpApi.GetEmployeesByExternalIdAsync(authToken, boxId, externalId);
+		}
+
 		public Task<EmployeeList> GetEmployeesAsync(string authToken, string boxId, int? page, int? count)
 		{
 			if (authToken == null) throw new ArgumentNullException("authToken");
diff --git a/src/DiadocApi.cs b/src/DiadocApi.cs
index 879ad5d0..00635f45 100644
--- a/src/DiadocApi.cs
+++ b/src/DiadocApi.cs
@@ -1793,6 +1793,14 @@ public Employee GetEmployee(string authToken, string boxId, string userId)
 			return diadocHttpApi.GetEmployee(authToken, boxId, userId);
 		}
 
+		public EmployeeList GetEmployeesByExternalId(string authToken, string boxId, string externalId)
+		{
+			if (authToken == null) throw new ArgumentNullException("authToken");
+			if (boxId == null) throw new ArgumentNullException("boxId");
+			if (externalId == null) throw new ArgumentNullException("externalId");
+			return diadocHttpApi.GetEmployeesByExternalId(authToken, boxId, externalId);
+		}
+
 		public EmployeeList GetEmployees(string authToken, string boxId, int? page, int? count)
 		{
 			if (authToken == null) throw new ArgumentNullException("authToken");
diff --git a/src/DiadocHttpApi.Employees.Async.cs b/src/DiadocHttpApi.Employees.Async.cs
index d44ce399..e66dee77 100644
--- a/src/DiadocHttpApi.Employees.Async.cs
+++ b/src/DiadocHttpApi.Employees.Async.cs
@@ -15,6 +15,14 @@ public Task<Employee> GetEmployeeAsync(string authToken, string boxId, string us
 			return PerformHttpRequestAsync<Employee>(authToken, "GET", queryString.BuildPathAndQuery());
 		}
 
+		public Task<EmployeeList> GetEmployeesByExternalIdAsync(string authToken, string boxId, string externalId)
+		{
+			var queryString = new PathAndQueryBuilder("/GetEmployeesByExternalId");
+			queryString.AddParameter("boxId", boxId);
+			queryString.AddParameter("externalId", externalId);
+			return PerformHttpRequestAsync<EmployeeList>(authToken, "GET", queryString.BuildPathAndQuery());
+		}
+
 		public Task<EmployeeList> GetEmployeesAsync(string authToken, string boxId, int? page, int? count)
 		{
 			var queryString = new PathAndQueryBuilder("/GetEmployees");
@@ -70,4 +78,4 @@ public Task<Employee> GetMyEmployeeAsync(string authToken, string boxId)
 			return PerformHttpRequestAsync<Employee>(authToken, "GET", queryString.BuildPathAndQuery());
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/src/DiadocHttpApi.Employees.cs b/src/DiadocHttpApi.Employees.cs
index d7a90f45..53f15b62 100644
--- a/src/DiadocHttpApi.Employees.cs
+++ b/src/DiadocHttpApi.Employees.cs
@@ -14,6 +14,14 @@ public Employee GetEmployee(string authToken, string boxId, string userId)
 			return PerformHttpRequest<Employee>(authToken, "GET", queryString.BuildPathAndQuery());
 		}
 
+		public EmployeeList GetEmployeesByExternalId(string authToken, string boxId, string externalId)
+		{
+			var queryString = new PathAndQueryBuilder("/GetEmployeesByExternalId");
+			queryString.AddParameter("boxId", boxId);
+			queryString.AddParameter("externalId", externalId);
+			return PerformHttpRequest<EmployeeList>(authToken, "GET", queryString.BuildPathAndQuery());
+		}
+
 		public EmployeeList GetEmployees(string authToken, string boxId, int? page, int? count)
 		{
 			var queryString = new PathAndQueryBuilder("/GetEmployees");
diff --git a/src/IDiadocApi.cs b/src/IDiadocApi.cs
index 5511ccdd..a8e754e6 100644
--- a/src/IDiadocApi.cs
+++ b/src/IDiadocApi.cs
@@ -471,6 +471,7 @@ byte[] ParseTitleXml(
 		DetectTitleResponse DetectDocumentTitles(string authToken, string boxId, byte[] content);
 		FileContent GetContent(string authToken, string typeNamedId, string function, string version, int titleIndex, XsdContentType contentType = default(XsdContentType));
 		Employee GetEmployee(string authToken, string boxId, string userId);
+		EmployeeList GetEmployeesByExternalId(string authToken, string boxId, string externalId);
 		EmployeeList GetEmployees(string authToken, string boxId, int? page, int? count);
 		Employee CreateEmployee(string authToken, string boxId, EmployeeToCreate employeeToCreate);
 		Employee UpdateEmployee(string authToken, string boxId, string userId, EmployeeToUpdate employeeToUpdate);
@@ -1002,6 +1003,7 @@ Task<AcquireCounteragentResultV2> WaitAcquireCounteragentResultV2Async(
 		[Obsolete("In order to download XSD schema use the link provided in DocumentTitle.XsdUrl")]
 		Task<FileContent> GetContentAsync(string authToken, string typeNamedId, string function, string version, int titleIndex, XsdContentType contentType = default(XsdContentType));
 		Task<Employee> GetEmployeeAsync(string authToken, string boxId, string userId);
+		Task<EmployeeList> GetEmployeesByExternalIdAsync(string authToken, string boxId, string externalId);
 		Task<EmployeeList> GetEmployeesAsync(string authToken, string boxId, int? page, int? count);
 		Task<Employee> CreateEmployeeAsync(string authToken, string boxId, EmployeeToCreate employeeToCreate);
 		Task<Employee> UpdateEmployeeAsync(string authToken, string boxId, string userId, EmployeeToUpdate employeeToUpdate);
diff --git a/src/Proto/Employees/Employee.proto.cs b/src/Proto/Employees/Employee.proto.cs
index 985fb9e9..7eabbdbe 100644
--- a/src/Proto/Employees/Employee.proto.cs
+++ b/src/Proto/Employees/Employee.proto.cs
@@ -55,6 +55,15 @@ public Diadoc.Api.Proto.Timestamp CreationTimestamp
       get { return _CreationTimestamp; }
       set { _CreationTimestamp = value; }
     }
+
+    private Diadoc.Api.Proto.Employees.EmployeeExternalIdentity _ExternalIdentity = null;
+    [global::ProtoBuf.ProtoMember(6, IsRequired = false, Name=@"ExternalIdentity", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    [global::System.ComponentModel.DefaultValue(null)]
+    public Diadoc.Api.Proto.Employees.EmployeeExternalIdentity ExternalIdentity
+    {
+      get { return _ExternalIdentity; }
+      set { _ExternalIdentity = value; }
+    }
     private global::ProtoBuf.IExtension extensionObject;
     global::ProtoBuf.IExtension global::ProtoBuf.IExtensible.GetExtensionObject(bool createIfMissing)
       { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
@@ -162,4 +171,32 @@ public int TotalCount
       { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
   }
   
+  [global::System.Serializable, global::ProtoBuf.ProtoContract(Name=@"EmployeeExternalIdentity")]
+  public partial class EmployeeExternalIdentity : global::ProtoBuf.IExtensible
+  {
+    public EmployeeExternalIdentity() {}
+    
+
+    private string _ExternalId = "";
+    [global::ProtoBuf.ProtoMember(1, IsRequired = false, Name=@"ExternalId", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    [global::System.ComponentModel.DefaultValue("")]
+    public string ExternalId
+    {
+      get { return _ExternalId; }
+      set { _ExternalId = value; }
+    }
+
+    private string _Email = "";
+    [global::ProtoBuf.ProtoMember(2, IsRequired = false, Name=@"Email", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    [global::System.ComponentModel.DefaultValue("")]
+    public string Email
+    {
+      get { return _Email; }
+      set { _Email = value; }
+    }
+    private global::ProtoBuf.IExtension extensionObject;
+    global::ProtoBuf.IExtension global::ProtoBuf.IExtensible.GetExtensionObject(bool createIfMissing)
+      { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
+  }
+  
 }
\ No newline at end of file
diff --git a/src/Proto/Employees/EmployeeToCreate.proto.cs b/src/Proto/Employees/EmployeeToCreate.proto.cs
index 1ccd2e4a..fb9854c8 100644
--- a/src/Proto/Employees/EmployeeToCreate.proto.cs
+++ b/src/Proto/Employees/EmployeeToCreate.proto.cs
@@ -75,6 +75,15 @@ public Diadoc.Api.Proto.Employees.EmployeeToCreateByCertificate Certificate
       get { return _Certificate; }
       set { _Certificate = value; }
     }
+
+    private Diadoc.Api.Proto.Employees.EmployeeToCreateBySsoProvider _SsoProvider = null;
+    [global::ProtoBuf.ProtoMember(3, IsRequired = false, Name=@"SsoProvider", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    [global::System.ComponentModel.DefaultValue(null)]
+    public Diadoc.Api.Proto.Employees.EmployeeToCreateBySsoProvider SsoProvider
+    {
+      get { return _SsoProvider; }
+      set { _SsoProvider = value; }
+    }
     private global::ProtoBuf.IExtension extensionObject;
     global::ProtoBuf.IExtension global::ProtoBuf.IExtensible.GetExtensionObject(bool createIfMissing)
       { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
@@ -141,4 +150,37 @@ public string Email
       { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
   }
   
+  [global::System.Serializable, global::ProtoBuf.ProtoContract(Name=@"EmployeeToCreateBySsoProvider")]
+  public partial class EmployeeToCreateBySsoProvider : global::ProtoBuf.IExtensible
+  {
+    public EmployeeToCreateBySsoProvider() {}
+    
+    private string _Email;
+    [global::ProtoBuf.ProtoMember(1, IsRequired = true, Name=@"Email", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    public string Email
+    {
+      get { return _Email; }
+      set { _Email = value; }
+    }
+
+    private Diadoc.Api.Proto.FullName _FullName = null;
+    [global::ProtoBuf.ProtoMember(2, IsRequired = false, Name=@"FullName", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    [global::System.ComponentModel.DefaultValue(null)]
+    public Diadoc.Api.Proto.FullName FullName
+    {
+      get { return _FullName; }
+      set { _FullName = value; }
+    }
+    private string _ProviderId;
+    [global::ProtoBuf.ProtoMember(3, IsRequired = true, Name=@"ProviderId", DataFormat = global::ProtoBuf.DataFormat.Default)]
+    public string ProviderId
+    {
+      get { return _ProviderId; }
+      set { _ProviderId = value; }
+    }
+    private global::ProtoBuf.IExtension extensionObject;
+    global::ProtoBuf.IExtension global::ProtoBuf.IExtensible.GetExtensionObject(bool createIfMissing)
+      { return global::ProtoBuf.Extensible.GetExtensionObject(ref extensionObject, createIfMissing); }
+  }
+  
 }
\ No newline at end of file