This is a Short Guide to show you all the solutions in order to fix your economy and get new jobs:
a)You should try to rescue to service F7 + Enter (this sometimes resets your economy)
b)You should try to sleep (only a temporary fix, but is not guaranteed to fix economy)
c)You should teleport to another garage
d)Economy reset. This solution will reset and repopulate your jobs list / freight market and return you to your home garage.
Below there are two examples of