MambaHR vs Justworks
Justworks rents you HR staff.
MambaHR is the HR staff.
Justworks is a PEO — you co-employ your team through them and lean on their support reps for the hard questions. MambaHR is the AI HR department: the work gets done in Slack, no co-employment, no shared liability, no waiting on a ticket queue.
Why teams switch
Three reasons, no fluff.
No co-employment. Your company, your EIN.
A PEO puts your employees on its own tax ID and shares legal liability for them. MambaHR doesn't touch your employment relationship — you stay the employer of record, and the agent handles the administrative work on top.
Answers in seconds, not a support queue.
Justworks routes the hard questions to a human support team. MambaHR answers in Slack instantly — FMLA stacking, multi-state classification, pay transparency — with a citation, and escalates only the genuine judgment calls.
You keep your benefits broker.
PEOs bundle benefits into the package, so leaving means re-shopping coverage. MambaHR is benefits-agnostic — keep your broker and plans, and let the agent run enrollment, life events, and 401(k) administration.
Side by side
The honest table.
Including the rows where Justworks wins — you’ll check anyway.
PEOs bundle their margin into your benefits. MambaHR is a flat $14–$30 per employee — no co-employment, no markup on coverage.
Do the math on pricing →Justworks is a good PEO if you want to rent benefits and a support team. MambaHR is what you hire when you want the HR work itself done — without handing over your employment relationship.
The part everyone dreads
Switching takes a day, not a quarter.
Your data imports
People, history, documents, time-off balances — pulled from Justworks in one pass. Nothing re-keyed, nothing lost.
The department is live
Slack and Teams connected, policies loaded, approvals routed to the right people. Your team just starts asking.
The work is getting done
Leave approved, questions answered with citations, the first payroll change file ready to load. You approve the big calls.
See the difference live.
Bring your Justworks bill to the demo. We'll do the math together.
No setup project · Your data imported in a day · You approve the big calls