Since Mavericks applications need to come from ‘identified developers’. This is what Apple says about what you can do as a workaround:
Problem is, you can not do this with the WordService service. Is there another workaround or could you release an update to WordService?
One workaround is to change the security settings temporarily, launch WordService and revert the settings.
Ah, yes! It works. System Preferences: Security & Privacy: Allow apps downloaded from: Anywhere"
I went to Library>Services and right clicked on wordservice. Got the …from unidentified developer prompt. Clicked open. It works fine.
The upcoming maintenance release will be finally signed.