send a copy of the employeesxjobsxlaborcodes_update.php page please.
that error means that there is some sort of output.
is is being reported at line 2:
output started at /home/citstime/domains/citstime.com/public_html/employeesxjobsxlaborcodes_update.php:2
I would need to see the code to troubleshoot, but I'm betting a blank space after the closing php tag.