diff --git a/common/utils/apiQueries.js b/common/utils/apiQueries.js
index cee683b4a..2dfd6f463 100644
--- a/common/utils/apiQueries.js
+++ b/common/utils/apiQueries.js
@@ -857,6 +857,21 @@ export const ADMIN_WORK_DAYS_QUERY = gql`
   }
 `;
 
+export const ADMIN_USERS_SINCE_DATE = gql`
+  query adminCompanies($id: Int!, $activityAfter: Date, $companyIds: [Int]) {
+    user(id: $id) {
+      adminedCompanies(companyIds: $companyIds) {
+        id
+        users(fromDate: $activityAfter) {
+          id
+          firstName
+          lastName
+        }
+      }
+    }
+  }
+`;
+
 export const GET_EMPLOYMENT_QUERY = gql`
   query getInvitation($token: String!) {
     employment(token: $token) {
diff --git a/web/admin/modals/C1BExportModal.js b/web/admin/modals/C1BExportModal.js
index 40ae6fe78..50f6bac51 100644
--- a/web/admin/modals/C1BExportModal.js
+++ b/web/admin/modals/C1BExportModal.js
@@ -22,6 +22,7 @@ import { TeamFilter } from "../components/TeamFilter";
 import { EmployeeFilter } from "../components/EmployeeFilter";
 import { CompanyFilter } from "../components/CompanyFilter";
 import Modal, { modalStyles } from "../../common/Modal";
+import { syncUsers } from "./ExcelExportModal";
 
 export default function C1BExportModal({
   open,
@@ -31,7 +32,8 @@ export default function C1BExportModal({
   initialTeams = [],
   defaultMinDate = null,
   defaultMaxDate = null,
-  defaultCompany
+  defaultCompany,
+  getUsersSinceDate
 }) {
   const MAX_RANGE_DAYS = 60;
   const today = new Date();
@@ -50,6 +52,13 @@ export default function C1BExportModal({
   const [teams, setTeams] = React.useState(initialTeams);
   const [employeeVersion, setEmployeeVersion] = React.useState(true);
 
+  React.useEffect(async () => {
+    if (minDate < defaultMinDate) {
+      const newUsers = await getUsersSinceDate(minDate);
+      syncUsers(setUsers, newUsers);
+    }
+  }, [minDate]);
+
   const invalidDateRange = (minDate, maxDate) =>
     maxDate &&
     minDate &&
diff --git a/web/admin/modals/ExcelExportModal.js b/web/admin/modals/ExcelExportModal.js
index 1ca028d1b..5f353a6ea 100644
--- a/web/admin/modals/ExcelExportModal.js
+++ b/web/admin/modals/ExcelExportModal.js
@@ -22,6 +22,15 @@ import Modal, { modalStyles } from "../../common/Modal";
 import { TeamFilter } from "../components/TeamFilter";
 import { EmployeeFilter } from "../components/EmployeeFilter";
 
+export const syncUsers = (setUsers, newUsers) => {
+  setUsers(currentUsers => [
+    ...currentUsers,
+    ...newUsers.filter(
+      newUser =>
+        !currentUsers.map(currentUser => currentUser.id).includes(newUser.id)
+    )
+  ]);
+};
 export default function ExcelExportModal({
   open,
   handleClose,
@@ -30,7 +39,8 @@ export default function ExcelExportModal({
   initialUsers,
   initialTeams,
   defaultMinDate = null,
-  defaultMaxDate = null
+  defaultMaxDate = null,
+  getUsersSinceDate
 }) {
   const api = useApi();
   const alerts = useSnackbarAlerts();
@@ -45,6 +55,13 @@ export default function ExcelExportModal({
 
   const [isEnabledDownload, setIsEnabledDownload] = React.useState(true);
 
+  React.useEffect(async () => {
+    if (minDate < defaultMinDate) {
+      const newUsers = await getUsersSinceDate(minDate);
+      syncUsers(setUsers, newUsers);
+    }
+  }, [minDate]);
+
   React.useEffect(() => setIsEnabledDownload(true), [
     minDate,
     maxDate,
diff --git a/web/admin/panels/Activities.js b/web/admin/panels/Activities.js
index bd7b62025..d0f8d8d9a 100644
--- a/web/admin/panels/Activities.js
+++ b/web/admin/panels/Activities.js
@@ -64,6 +64,7 @@ import { LogHolidayButton } from "../../common/LogHolidayButton";
 import { LogHolidayForm } from "../../common/LogHolidayForm";
 import { graphQLErrorMatchesCode } from "common/utils/errors";
 import { usePageTitle } from "../../common/UsePageTitle";
+import { useGetUsersSinceDate } from "../../common/hooks/useGetUsersSinceDate";
 
 const useStyles = makeStyles(theme => ({
   filterGrid: {
@@ -165,6 +166,7 @@ function ActivitiesPanel() {
   const api = useApi();
   const history = useHistory();
   const { trackEvent } = useMatomo();
+  const { getUsersSinceDate } = useGetUsersSinceDate();
 
   const [users, setUsers] = React.useState(adminStore.activitiesFilters.users);
   const [teams, setTeams] = React.useState(adminStore.activitiesFilters.teams);
@@ -392,7 +394,8 @@ function ActivitiesPanel() {
                   defaultMinDate: minDate ? new Date(minDate) : null,
                   defaultMaxDate: maxDate
                     ? new Date(maxDate)
-                    : startOfDayAsDate(new Date())
+                    : startOfDayAsDate(new Date()),
+                  getUsersSinceDate
                 });
               }}
             >
@@ -413,7 +416,8 @@ function ActivitiesPanel() {
                   defaultMinDate: minDate ? new Date(minDate) : null,
                   defaultMaxDate: maxDate
                     ? new Date(maxDate)
-                    : startOfDayAsDate(new Date())
+                    : startOfDayAsDate(new Date()),
+                  getUsersSinceDate
                 });
               }}
             >
diff --git a/web/common/hooks/useGetUsersSinceDate.js b/web/common/hooks/useGetUsersSinceDate.js
new file mode 100644
index 000000000..dc7addab6
--- /dev/null
+++ b/web/common/hooks/useGetUsersSinceDate.js
@@ -0,0 +1,36 @@
+import React from "react";
+import { ADMIN_USERS_SINCE_DATE } from "common/utils/apiQueries";
+import { useApi } from "common/utils/api";
+import { useAdminStore } from "../../admin/store/store";
+import { isoFormatLocalDate } from "common/utils/time";
+import { useSnackbarAlerts } from "../Snackbar";
+import { formatApiError } from "common/utils/errors";
+
+export const useGetUsersSinceDate = () => {
+  const api = useApi();
+  const alerts = useSnackbarAlerts();
+  const adminStore = useAdminStore();
+  const earliestDate = React.useRef(null);
+  const memo = React.useRef(null);
+
+  const getUsersSinceDate = async fromDate => {
+    if (!earliestDate.current || fromDate < earliestDate.current) {
+      try {
+        const payload = await api.graphQlQuery(ADMIN_USERS_SINCE_DATE, {
+          id: adminStore.userId,
+          activityAfter: isoFormatLocalDate(fromDate),
+          companyIds: [adminStore.companyId]
+        });
+        const users = payload?.data?.user?.adminedCompanies[0]?.users;
+        earliestDate.current = fromDate;
+        memo.current = users;
+        return users;
+      } catch (err) {
+        alerts.error(formatApiError(err), "get_users_since_date", 6000);
+      }
+    }
+    return memo.current;
+  };
+
+  return { getUsersSinceDate };
+};