I currently use a single file Work-log.org with headlines and subtrees for tracking work & time:
* JWRK PPTDEV-455 Add 'hve' to all Appropriate Library calls in web_src/hve/scripts :455:
** WORK <2013-12-04 Wed> code review, developer testing, prepare for install
CLOCK: [2013-12-04 Wed 14:00]--[2013-12-04 Wed 15:00] => 1:00
** DONE <2013-12-02 Mon> search archive for appropriate lib calls & add have
CLOCK: [2013-12-04 Wed 13:10]--[2013-12-04 Wed 14:00] => 0:50
CLOCK: [2013-12-03 Tue 09:15]--[2013-12-03 Tue 09:25] => 0:10
CLOCK: [2013-12-02 Mon 15:29]--[2013-12-02 Mon 16:05] => 0:36
:PROPERTIES:
--
Subhan Michael Tindall | Software Developer
| smt@rentrakmail.com
RENTRAK | www.rentrak.com | NASDAQ: RENT