diff --git a/src/dynamic/companyuser.php b/src/dynamic/companyuser.php
new file mode 100644
index 0000000..0acfac3
--- /dev/null
+++ b/src/dynamic/companyuser.php
@@ -0,0 +1,102 @@
+<?php
+require_once(__DIR__."/../core.php");
+security::checkType(security::ADMIN, security::METHOD_NOTFOUND);
+
+if (!isset($_GET["id"])) {
+  security::notFound();
+}
+
+$p = people::get($_GET["id"]);
+
+if ($p === false) {
+  security::notFound();
+}
+
+$companies = companies::getAll();
+?>
+
+<style>
+.mdl-dialog__content {
+  color: rgba(0,0,0,.87)!important;
+}
+
+#dynDialog {
+  max-width: 300px;
+  width: auto;
+}
+</style>
+
+<dynscript>
+var person = <?=(int)$p["id"]?>;
+
+document.querySelectorAll("button[data-company-id]").forEach(btn => {
+  btn.addEventListener("click", e => {
+    var id = e.currentTarget.getAttribute("data-company-id");
+    fetch("ajax/addpersontocompany.php", {
+      method: "post",
+      body: "person="+parseInt(person)+"&company="+parseInt(id),
+      headers: {
+        "Content-Type": "application/x-www-form-urlencoded"
+      }
+    }).then(response => {
+      response.text().then(text => console.log);
+      dynDialog.reload();
+    }).catch(error => {
+      alert("Ha habido un error dando de alta a este trabajador de esta empresa: "+error);
+    });
+  });
+});
+
+document.querySelectorAll("button[data-worker-id]").forEach(btn => {
+  btn.addEventListener("click", e => {
+    var id = e.currentTarget.getAttribute("data-worker-id");
+    dynDialog.load("dynamic/workhistory.php?id="+parseInt(id));
+  });
+});
+</dynscript>
+
+<h4 class="mdl-dialog__title"><?=security::htmlsafe($p["name"])?></h4>
+<div class="mdl-dialog__content">
+<?php
+$list = [];
+$list["visible"] = "";
+$list["hidden"] = "";
+
+$workers = workers::getPersonWorkers($p["id"]);
+foreach ($workers as $w) {
+  $list[($w["hidden"] ? "hidden" : "visible")] .= '<li>'.
+    security::htmlsafe($companies[$w["company"]]).'
+    <button class="mdl-button mdl-js-button mdl-button--icon" title="Acceder al historial de altas y bajas" data-worker-id="'.(int)$w["id"].'">
+      <i class="material-icons">history</i>
+    </button>
+    <br>
+    <span class="mdl-color-text--grey-600">'.($w["hidden"] ? "Dada de baja" : "Dada de alta").' el '.date("d/m/Y", $w["lastupdated"]).'</span></li>';
+}
+?>
+  <p><b>Dada de alta en:</b></p>
+  <?php
+  if (!empty($list["visible"])) {
+    echo "<ul>".$list["visible"]."</ul>";
+  }
+  ?>
+  <p><b>Dada de baja en:</b></p>
+  <?php
+  if (!empty($list["hidden"])) {
+    echo "<ul>".$list["hidden"]."</ul>";
+  }
+  ?>
+  <p><b>No dada de alta en:</b></p>
+  <ul>
+    <?php
+    foreach ($companies as $id => $name) {
+      if (in_array($id, $p["companies"])) continue;
+      ?>
+      <li><?=security::htmlsafe($name)?> <button class="mdl-button mdl-js-button mdl-button--icon mdl-color-text--green" title="Dar de alta en esta empresa" data-company-id="<?=(int)$id?>"><i class="material-icons">add</i></button></li>
+      <?php
+    }
+    ?>
+  </ul>
+</div>
+<div class="mdl-dialog__actions">
+  <button data-dyndialog-close class="mdl-button mdl-js-button mdl-js-ripple-effect cancel">Cerrar</button>
+</div>