John -
 
I know you have a custom FoxPro Labor program and custom import routines - are you looking to replace them?  This may be something we need to discuss.   Changing things may affect other customizations you have.
 
But to answer your original question, if an external labor reporting system can create an ASCII file populating the desired fields, then it can be imported.
 
You would populate either the Run Hours (decimal) OR the HH, MM and SS separately.  Number of Jobs worked would cause hte time to be divided.