Does a main employer have to pay earned sick leave if an employee is injured and receiving Workers Compensation on another job?

The employer is not required by law to pay out sick pay while an employee is collecting workman's comp. It depends on the employer though. In some cases an employer may pay earned sick pay to an employee collecting workman's comp. pay as a good will gesture, especailly to an employee who has had a very serious injury and has been a long term employee who has had few or no injuries.