Schedule C client has no other employees on payroll. He travels the country, his minor child comes with him. The child helps him clean up construction sites about 10 to 20 hours a week. My understanding is no payroll withholding/FICA are due based on the age of the child and Sch C status.
I assume he would W-2 his son at year end for any amount paid. Are there any quarterly 941 or annual 944 filing requirements if this is his only employee?