diff --git a/backend/internal/model/timereport b/backend/internal/model/timereport
new file mode 100644
index 0000000..d48c5fb
--- /dev/null
+++ b/backend/internal/model/timereport
@@ -0,0 +1,19 @@
+package model
+
+type TimeReport struct {
+	reportId     string
+	projectName  string
+	userName     string
+	userRole     string
+	reportDate   string
+	timeWorked   uint64
+	isSigned     bool
+	reportStatus string // Example "draft", "signed", "unsigned"
+}
+
+type Project struct {
+	timeReports    []TimeReport
+	projectName    string
+	projectmembers map[string]User
+	projectRoles   map[string]User
+}
diff --git a/backend/internal/model/user.go b/backend/internal/model/user.go
new file mode 100644
index 0000000..c125a60
--- /dev/null
+++ b/backend/internal/model/user.go
@@ -0,0 +1,139 @@
+package model
+
+import (
+	"errors"
+)
+
+type Account struct {
+	fullName string
+	userName string
+}
+
+type Administrator struct {
+	projects map[string]Project
+	Account
+	ProjectMember // comp
+}
+
+// Administrator reciever functions
+func (administrator Administrator) addUser(project *Project, user *User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (administrator Administrator) removerUser(project *Project, user *User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (administrator Administrator) deleteProject(project *Project) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (administrator Administrator) changeUserRole(project *Project, user *User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (administrator *Administrator) login() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (administrator *Administrator) logout() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+type ProjectManager struct {
+	managedProjects map[string]Project // projekt som förvaltas av projektledaren
+	totalTime       uint64             // total totalt tid arbetat av projektledaren
+	Account
+	ProjectMember // comp
+}
+
+// ProjectManager reciever functions
+func (projectManager ProjectManager) signReport(timeReport *TimeReport, user User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectManager ProjectManager) unsignReport(timeReport *TimeReport, user User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectManager ProjectManager) getAllReports(project *Project) ([]TimeReport, error) {
+	// WIP
+	return project.timeReports, errors.New("WIP")
+}
+
+func (projectManager ProjectManager) assignRole(user *User, project *Project, newRole string) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectManager ProjectManager) removeMember(project *Project, user *User) error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectManager ProjectManager) getTotalTime(project *Project) (uint64, error) {
+	// WIP
+	return 0, errors.New("WIP")
+}
+
+func (projectManager *ProjectManager) login() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectManager *ProjectManager) logout() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+type ProjectMember struct {
+	timereports []TimeReport
+	role        string // ?????
+	Account            // comp
+}
+
+// User reciever functions
+
+// function used to create a time report, returning a *TimeReport is questionable
+func (ProjectMember *ProjectMember) createTimeReport(Project *Project) (*TimeReport, error) {
+	// WIP
+	return &TimeReport{}, errors.New("WIP")
+}
+
+func (ProjectMember ProjectMember) getTimeReport(timereports *[]TimeReport) (*TimeReport, error) {
+	// WIP
+	return &TimeReport{}, errors.New("WIP")
+}
+
+func (ProjectMember *ProjectMember) editTimeReport(timereport *TimeReport) {
+	// timereport.editReport()
+	// WIP
+}
+
+func (projectUser ProjectMember) deleteTimeReport(timeReport *TimeReport) error { // Ska bara project manager kunna göra detta? fråga ledarna!
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectUser *ProjectMember) login() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+func (projectUser *ProjectMember) logout() error {
+	// WIP
+	return errors.New("WIP")
+}
+
+type User interface {
+	login()
+	logout()
+}
diff --git a/go.work.sum b/go.work.sum
new file mode 100644
index 0000000..f0a8e9c
--- /dev/null
+++ b/go.work.sum
@@ -0,0 +1,5 @@
+github.com/philhofer/fwd v1.1.2/go.mod h1:qkPdfjR2SIEbspLqpe1tO4n5yICnr2DY7mqEx2tUTP0=
+github.com/tinylib/msgp v1.1.8/go.mod h1:qkpG+2ldGg4xRFmx+jfTvZPxfGFhi64BcnL9vkCm/Tw=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=