Falcon 20FJF/20C/20D/20E/20F
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 45; Flight Crew Total 10000; Flight Crew Type 1500
Time Pressure; Communication Breakdown
Ground Event / Encounter Other / Unknown
General None Reported / Taken
Human Factors; Weather
As I was taxing out the line guys at the FBO threw chocks underneath my moving aircraft to stop me.  I told them I was trying to beat the weather out and I would call them when I landed to give them my CC number for the ramp fee.  They wanted them then and there; so they tried to stop me which could have caused damage as I was in motion. I ended up jumping the chocks.
Falcon 20 Captain reported taxiing over wheel chocks thrown out by FBO linemen as he was departing quickly to avoid approaching weather before paying fees.