diff --git a/elisp/chronometrist.el b/elisp/chronometrist.el
index 7d0cabc..05e2424 100644
--- a/elisp/chronometrist.el
+++ b/elisp/chronometrist.el
@@ -1875,6 +1875,23 @@ Return value is either a list in the form
     t))
 ;; replace-last:1 ends here
 
+;; [[file:chronometrist.org::*backend][backend:1]]
+(defclass chronometrist-timeclock-backend (chronometrist-file-backend-mixin)
+  ((extension :initform "timelog"
+              :accessor chronometrist-backend-ext
+              :custom 'string)))
+
+(chronometrist-register-backend :timeclock
+                    "Store records in the timeclock.el format."
+                    (make-instance 'chronometrist-timeclock-backend :path chronometrist-file))
+;; backend:1 ends here
+
+;; [[file:chronometrist.org::*to-hash-table][to-hash-table:1]]
+(cl-defmethod chronometrist-to-hash-table ((backend chronometrist-timeclock-backend))
+  (with-slots (file) backend
+    ))
+;; to-hash-table:1 ends here
+
 ;; [[file:chronometrist.org::*remove-prefix][remove-prefix:1]]
 (defun chronometrist-remove-prefix (string)
   (replace-regexp-in-string "^chronometrist-" "" string))
diff --git a/elisp/chronometrist.org b/elisp/chronometrist.org
index b841e25..5d68f44 100644
--- a/elisp/chronometrist.org
+++ b/elisp/chronometrist.org
@@ -2897,6 +2897,26 @@ We apply the same hack as in the [[hack-note-plist-group-insert][insert]] method
 (cl-defmethod chronometrist-count-records ((backend chronometrist-plist-group-backend)))
 #+END_SRC
 
+*** timeclock backend
+**** backend                                                       :class:
+#+BEGIN_SRC emacs-lisp
+(defclass chronometrist-timeclock-backend (chronometrist-file-backend-mixin)
+  ((extension :initform "timelog"
+              :accessor chronometrist-backend-ext
+              :custom 'string)))
+
+(chronometrist-register-backend :timeclock
+                    "Store records in the timeclock.el format."
+                    (make-instance 'chronometrist-timeclock-backend :path chronometrist-file))
+#+END_SRC
+
+**** to-hash-table
+#+BEGIN_SRC emacs-lisp
+(cl-defmethod chronometrist-to-hash-table ((backend chronometrist-timeclock-backend))
+  (with-slots (file) backend
+    ))
+#+END_SRC
+
 ** Migration
 :PROPERTIES:
 :CUSTOM_ID: program-migration