diff --git a/bin/work b/bin/work
index f1a4219..f071f51 100755
--- a/bin/work
+++ b/bin/work
@@ -49,27 +49,6 @@ def td_format(td):
     return '{:d}:{:02d}'.format(int(hours), int(minutes))
 
 
-def convert_manual_entry():
-    for line in sys.stdin:
-        fields = line.split(",")
-        if len(fields) < 6:
-            break
-        morning = datetime.strptime(fields[1], "%H:%M")
-        break_start = datetime.strptime(fields[2], "%H:%M")
-        break_end = datetime.strptime(fields[3], "%H:%M")
-        evening = datetime.strptime(fields[4], "%H:%M")
-        break_time = break_end - break_start
-        full_day = evening - morning
-        work_day = full_day - break_time
-        print('{},{},{},{},{},{}'.format(
-            fields[0],
-            morning.strftime("%H:%M"),
-            evening.strftime("%H:%M"),
-            td_format(break_time),
-            td_format(work_day),
-            "".join(fields[5:]).strip()))
-
-
 def get_today_fields():
     try:
         with open(TODAY_FILE, "r") as f:
@@ -161,7 +140,34 @@ def work_export(args):
 
 
 def work_parse(args):
-    print("parse")
+    new_lines = []
+    try:
+        with open(args.file, "r") as f:
+            for line in f:
+                fields = line.split(",")
+                if len(fields) < 6:
+                    break
+                morning = datetime.strptime(fields[1], "%H:%M")
+                break_start = datetime.strptime(fields[2], "%H:%M")
+                break_end = datetime.strptime(fields[3], "%H:%M")
+                evening = datetime.strptime(fields[4], "%H:%M")
+                break_time = break_end - break_start
+                full_day = evening - morning
+                work_day = full_day - break_time
+                new_lines.append('{},{},{},{},{},{}'.format(
+                    fields[0],
+                    morning.strftime("%H:%M"),
+                    evening.strftime("%H:%M"),
+                    td_format(break_time),
+                    td_format(work_day),
+                    "".join(fields[5:]).strip()))
+    except FileNotFoundError:
+        die("file not found: {}".format(args.file))
+    # TODO do sanity checking, like if a day already exists
+    with open(TIME_FILE, "a") as f:
+        for line in new_lines:
+            f.write("{}\n".format(line))
+    log("Written {} new entries to {}".format(len(new_lines), TIME_FILE))
 
 
 if __name__ == "__main__":
@@ -184,6 +190,7 @@ if __name__ == "__main__":
     end_parser.set_defaults(func=work_end)
     export_parser.set_defaults(func=work_export)
     parse_parser.set_defaults(func=work_parse)
+    parse_parser.add_argument("file")
 
     args = parser.parse_args()
     args.func(args)