You can try the following:
In Upwork, if you intend to hire the person as FTE down the line and you do it before 24 months have passed since their first contract through the site, you may have to pay for a "release".
You can also try Pilot or Gusto for onboarding. They manage everything from payroll to healthcare to retirement.
Gusto is an enormous time saver - it will walk you through 401k and insurance.
Key Benefits:
3 months free of Simple, Plus, Premium; 15% off Premium after trial period
With Gusto + Ardius (R&D Tax):
20% utilization fee (vs 30%)
Waived real time credit fee (save $100/mo)
Waived one time setup fee (vs $1,000)
1-on-1 onboarding with a dedicated Success specialist
Requirements:
Must be a new Gusto customer
Existing customers eligible for 15% off Select after plan consultation
Redemption Instructions (must use these links):
Apply and redeem Alchemist Accelerator’s special offer here:
https://gusto.com/go/bd/alchemist
Do you qualify for the R&D Tax Credit? <90 second explainer>
https://www.ardius.com/?ref=ALCMST