diff --git a/application/models/codex/Oehbeitrag_model.php b/application/models/codex/Oehbeitrag_model.php
new file mode 100644
index 000000000..d12dbf23f
--- /dev/null
+++ b/application/models/codex/Oehbeitrag_model.php
@@ -0,0 +1,35 @@
+<?php
+class Oehbeitrag_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'bis.tbl_oehbeitrag';
+		$this->pk = 'oehbeitrag_id';
+	}
+
+	/**
+	 * Gets oehbeitrag data valid for a certain Studiensemester.
+	 * @param string $studiensemester_kurzbz
+	 * @return object
+	 */
+	public function getByStudiensemester($studiensemester_kurzbz)
+	{
+		$qry = "WITH semstart AS (
+					SELECT start FROM public.tbl_studiensemester
+					WHERE studiensemester_kurzbz = ?
+				)
+				SELECT * FROM bis.tbl_oehbeitrag oehb
+				JOIN public.tbl_studiensemester semvon ON oehb.von_studiensemester_kurzbz = semvon.studiensemester_kurzbz
+				LEFT JOIN public.tbl_studiensemester sembis ON oehb.bis_studiensemester_kurzbz = sembis.studiensemester_kurzbz
+				JOIN semstart ON semstart.start::date >= semvon.start::date AND (sembis.studiensemester_kurzbz IS NULL OR semstart.start::date <= sembis.start::date)
+				ORDER BY semvon.start
+				LIMIT 1";
+
+		return $this->execQuery($qry, array($studiensemester_kurzbz));
+	}
+}