Social security is a percentage, but since health insurance is not usually provided by the government (unless you have Medicare/Medicaid), you pay a flat fee to

Social security is a percentage, but since health insurance is not usually provided by the government (unless you have Medicare/Medicaid), you pay a flat fee to a private company regardless of income. But my understanding is that companies are not required to provide any benefits to part-time workers whatsoever, and frequently use that loophole to avoid having to pay, by making their workers either subcontractors or part-time. https://www.healthcare.gov/part-time-workers/ https://www.healthcare.gov/part-time-workers/