Attached test works correctly on linux (3.7, 3.8) and mac (only 3.7).
Mac python3.8 falls with exception:

multiprocessing.pool.RemoteTraceback:
"""
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "test.py", line 8, in work
    print(F"Work={arg} args={args}")
NameError: name 'args' is not defined
"""