diff --git a/src/main/java/com/example/nto/dto/mappers/OfficeMapper.java b/src/main/java/com/example/nto/dto/mappers/OfficeMapper.java
index 193555d..ae651bb 100644
--- a/src/main/java/com/example/nto/dto/mappers/OfficeMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/OfficeMapper.java
@@ -1,4 +1,48 @@
 package com.example.nto.dto.mappers;
 
+import com.example.nto.domain.entity.Office;
+import com.example.nto.dto.entity.OfficeDTO;
+import com.example.nto.dto.mappers.employee.EmployeeItemMapper;
+import lombok.experimental.UtilityClass;
+
+import java.util.stream.Collectors;
+
+@UtilityClass
 public class OfficeMapper {
+    public static OfficeDTO convertToDTO(Office office) {
+        OfficeDTO officeDTO = new OfficeDTO();
+
+        officeDTO.setId(office.getId());
+        officeDTO.setName(office.getName());
+        officeDTO.setDescription(office.getDescription());
+        officeDTO.setAddress(office.getAddress());
+        officeDTO.setLatitude(office.getLatitude());
+        officeDTO.setLongitude(office.getLongitude());
+        officeDTO.setLinkLogo(office.getLinkLogo());
+        officeDTO.setTelephone(office.getTelephone());
+        officeDTO.setEmail(office.getEmail());
+
+        officeDTO.setEmployees(office.getEmployeeList().stream().map(EmployeeItemMapper::convertToDTO).collect(Collectors.toList()));
+        officeDTO.setTerminals(office.getTerminals().stream().map(TerminalMapper::convertToDTO).collect(Collectors.toList()));
+
+        return officeDTO;
+    }
+
+    public static Office convertFromDTO(OfficeDTO officeDTO) {
+        Office office = new Office();
+
+        office.setId(officeDTO.getId());
+        office.setName(officeDTO.getName());
+        office.setDescription(officeDTO.getDescription());
+        office.setAddress(officeDTO.getAddress());
+        office.setLatitude(officeDTO.getLatitude());
+        office.setLongitude(officeDTO.getLongitude());
+        office.setLinkLogo(officeDTO.getLinkLogo());
+        office.setTelephone(officeDTO.getTelephone());
+        office.setEmail(officeDTO.getEmail());
+
+        // todo: Проверить, возможно, здесь нужно office.setEmployeeList() и office.setTerminals()
+
+        return office;
+    }
 }
diff --git a/src/main/java/com/example/nto/dto/mappers/PositionMapper.java b/src/main/java/com/example/nto/dto/mappers/PositionMapper.java
index 486b848..5ec7a0e 100644
--- a/src/main/java/com/example/nto/dto/mappers/PositionMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/PositionMapper.java
@@ -1,4 +1,21 @@
 package com.example.nto.dto.mappers;
 
+import com.example.nto.domain.entity.Position;
+import com.example.nto.dto.entity.PositionDTO;
+import com.example.nto.dto.mappers.employee.EmployeeItemMapper;
+import lombok.experimental.UtilityClass;
+
+import java.util.stream.Collectors;
+
+@UtilityClass
 public class PositionMapper {
-}
+    public static PositionDTO convertToDTO(Position position) {
+        PositionDTO positionDTO = new PositionDTO();
+
+        positionDTO.setId(position.getId());
+        positionDTO.setName(position.getName());
+        positionDTO.setEmployeeItemDTOList(position.getEmployees().stream().map(EmployeeItemMapper::convertToDTO).collect(Collectors.toList()));
+
+        return positionDTO;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/nto/dto/mappers/TerminalMapper.java b/src/main/java/com/example/nto/dto/mappers/TerminalMapper.java
index 168c442..e9defbf 100644
--- a/src/main/java/com/example/nto/dto/mappers/TerminalMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/TerminalMapper.java
@@ -1,4 +1,29 @@
 package com.example.nto.dto.mappers;
 
+import com.example.nto.domain.entity.Office;
+import com.example.nto.domain.entity.Terminal;
+import com.example.nto.dto.entity.TerminalDTO;
+import lombok.experimental.UtilityClass;
+
+@UtilityClass
 public class TerminalMapper {
+    public static TerminalDTO convertToDTO(Terminal terminal) {
+        TerminalDTO terminalDTO = new TerminalDTO();
+
+        terminalDTO.setId(terminal.getId());
+        terminalDTO.setName(terminal.getName());
+        terminalDTO.setCode(terminal.getCode());
+        terminalDTO.setOfficeName(terminal.getOffice().getName());
+
+        return terminalDTO;
+    }
+
+    public static Terminal convertFromDTO(TerminalDTO terminalDTO, Office office) {
+        Terminal terminal = new Terminal();
+
+        terminal.setName(terminalDTO.getName());
+        terminal.setOffice(office);
+
+        return terminal;
+    }
 }
diff --git a/src/main/java/com/example/nto/dto/mappers/VisitMapper.java b/src/main/java/com/example/nto/dto/mappers/VisitMapper.java
index 8d969c8..98f44f8 100644
--- a/src/main/java/com/example/nto/dto/mappers/VisitMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/VisitMapper.java
@@ -1,4 +1,42 @@
 package com.example.nto.dto.mappers;
 
+
+import com.example.nto.domain.entity.Employee;
+import com.example.nto.domain.entity.Passage;
+import com.example.nto.domain.entity.Terminal;
+import com.example.nto.domain.entity.Visit;
+import com.example.nto.dto.entity.VisitDTO;
+import com.example.nto.utils.Utils;
+import lombok.experimental.UtilityClass;
+
+import java.time.LocalDateTime;
+
+@UtilityClass
 public class VisitMapper {
+    public static VisitDTO convertToDTO(Visit visit) {
+        VisitDTO visitDTO = new VisitDTO();
+
+        visitDTO.setId(visit.getId());
+        visitDTO.setStartVisit(visit.getStartVisit().toString());
+        visitDTO.setEndVisit(visit.getEndVisit().toString());
+        visitDTO.setFinished(visit.isFinished());
+        visitDTO.setDurationVisit(Utils.period(visit.getStartVisit(), visit.getEndVisit()).toString());
+        visitDTO.setOfficeName(visit.getStartTerminal().getOffice().getName());
+        visitDTO.setTypePassage(visit.getPassage().getPassageName());
+
+        return visitDTO;
+    }
+
+    public static Visit convertFromDTO(Terminal terminal, Employee employee, Passage passage) {
+        Visit visit = new Visit();
+
+        visit.setEmployee(employee);
+        visit.setStartVisit(LocalDateTime.now());
+        visit.setFinished(false);
+        visit.setStartTerminal(terminal);
+        visit.setPassage(passage);
+
+        return visit;
+    }
 }
+
diff --git a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeCreateMapper.java b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeCreateMapper.java
index 4a2098d..fb751e5 100644
--- a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeCreateMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeCreateMapper.java
@@ -26,6 +26,7 @@ public class EmployeeCreateMapper {
         employee.setPosition(position);
         employee.setRole(role);
         employee.setProfileImageUrl(Utils.getRandomUrlProfileImage());
+        employee.setBlocked(false);
 
         return employee;
     }
diff --git a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeItemMapper.java b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeItemMapper.java
index 1fffbe6..68cf90d 100644
--- a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeItemMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeItemMapper.java
@@ -1,4 +1,31 @@
 package com.example.nto.dto.mappers.employee;
 
+import com.example.nto.domain.entity.Employee;
+import com.example.nto.domain.entity.Visit;
+import com.example.nto.dto.entity.employee.EmployeeItemDTO;
+import com.example.nto.utils.Utils;
+import lombok.experimental.UtilityClass;
+
+import java.util.List;
+
+@UtilityClass
 public class EmployeeItemMapper {
+    public static EmployeeItemDTO convertToDTO(Employee employee) {
+        EmployeeItemDTO employeeItemDTO = new EmployeeItemDTO();
+        employeeItemDTO.setId(employee.getId());
+        employeeItemDTO.setName(employee.getName());
+        employeeItemDTO.setSurname(employee.getSurname());
+        employeeItemDTO.setPatronymic(employee.getPatronymic());
+        employeeItemDTO.setProfileImageUrl(employee.getProfileImageUrl());
+        employeeItemDTO.setOfficeName(employee.getOffice().getName());
+        employeeItemDTO.setPosition(employee.getPosition().getName());
+        employeeItemDTO.setBlocked(employee.isBlocked());
+
+        // todo: Протестировать работу!
+
+        List<Visit> visitsLast30Days = Utils.filterDateLast30Days(employee.getVisits());
+        employeeItemDTO.setVisitStatus(visitsLast30Days.stream().anyMatch(visit -> !visit.isFinished()));
+
+        return employeeItemDTO;
+    }
 }
diff --git a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeMapper.java b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeMapper.java
index 5d3b16b..62fae69 100644
--- a/src/main/java/com/example/nto/dto/mappers/employee/EmployeeMapper.java
+++ b/src/main/java/com/example/nto/dto/mappers/employee/EmployeeMapper.java
@@ -1,4 +1,79 @@
 package com.example.nto.dto.mappers.employee;
 
+import com.example.nto.domain.entity.*;
+import com.example.nto.dto.entity.employee.EmployeeDTO;
+import com.example.nto.utils.Utils;
+import lombok.experimental.UtilityClass;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@UtilityClass
 public class EmployeeMapper {
+    public static EmployeeDTO convertToDTO(Employee employee) {
+        EmployeeDTO employeeDTO = new EmployeeDTO();
+
+        employeeDTO.setId(employee.getId());
+        employeeDTO.setName(employee.getName());
+        employeeDTO.setSurname(employee.getSurname());
+        employeeDTO.setPatronymic(employee.getPatronymic());
+        employeeDTO.setTelephone(employee.getTelephone());
+        employeeDTO.setEmail(employee.getEmail());
+
+        employeeDTO.setOfficeId(employee.getOffice().getId());
+        employeeDTO.setOfficeName(employee.getOffice().getName());
+        employeeDTO.setOfficeImageUrl(employee.getOffice().getLinkLogo());
+        employeeDTO.setPosition(employee.getPosition().getName());
+        employeeDTO.setRole(employee.getRole().getRoleName());
+        employeeDTO.setRole(employee.getProfileImageUrl());
+        employeeDTO.setBlocked(employee.isBlocked());
+
+        List<Visit> visitsLast30Days = Utils.filterDateLast30Days(employee.getVisits());
+
+        boolean visitStatus = false;
+        String startVisitDateTime = null;
+        String currentOfficeName = null;
+        List<Long> visitsIdLast30Days = new ArrayList<>(visitsLast30Days.size());
+        List<List<LocalDateTime>> periods = new ArrayList<>(visitsLast30Days.size());
+
+        for (Visit visit : visitsLast30Days) {
+            if (!visit.isFinished()) {
+                if (visitStatus) throw new IllegalStateException("У работника два посещения одновременно!");
+
+                visitStatus = true;
+                startVisitDateTime = visit.getStartVisit().toString();
+                currentOfficeName = visit.getStartTerminal().getOffice().getName();
+            }
+            visitsIdLast30Days.add(visit.getId());
+            periods.add(List.of(visit.getStartVisit(), visit.getEndVisit()));
+        }
+
+        employeeDTO.setVisitStatus(visitStatus);
+        employeeDTO.setStartVisitDateTime(startVisitDateTime);
+        employeeDTO.setCurrentOfficeName(currentOfficeName);
+        employeeDTO.setVisitsIdLast30Days(visitsIdLast30Days);
+        employeeDTO.setTotalTimeVisitsLast30Days(Utils.periods(periods));
+        employeeDTO.setCreateAt(employee.getCreatedAt().toString());
+
+        return employeeDTO;
+    }
+
+    public static Employee convertFromDTO(EmployeeDTO employeeDTO, Office office, Position position, Role role) {
+        Employee employee = new Employee();
+
+        employee.setName(employeeDTO.getName());
+        employee.setSurname(employeeDTO.getSurname());
+        employee.setPatronymic(employeeDTO.getPatronymic());
+        employee.setTelephone(employeeDTO.getTelephone());
+        employee.setEmail(employeeDTO.getEmail());
+        employee.setOffice(office);
+        employee.setPosition(position);
+        employee.setRole(role);
+        employee.setProfileImageUrl(employeeDTO.getProfileImageUrl());
+        employee.setBlocked(employeeDTO.isBlocked());
+
+        return employee;
+    }
 }
+