How MediaRadar Navigated a Multi-State PEO Transition and Centralized Compliance with Mosey
MediaRadar transitioned off a PEO and onboarded 350 employees across 40 states—saving over 80 hours and thousands in labor costs while streamlining compliance with Mosey.
“If you’re moving off a PEO, Mosey is the system you wish you had from day one. It saves time, reduces stress, and gives your team the confidence that you’re not missing anything.”
Background
MediaRadar is a long-standing player in the AdTech space with a reputation for growth. In late 2023, the company significantly expanded its operations through acquisition, increasing headcount and compliance complexity virtually overnight.
With 350 employees across 40 states, the organization was preparing to leave its PEO arrangement in favor of a more scalable, in-house model—managing payroll through ADP and benefits through its broker, Sequoia. The transition required the HR team to quickly navigate a complex and unfamiliar web of registrations, tax accounts, and compliance deadlines.
“We inherited multiple entities and state-by-state obligations that required immediate attention. We knew we didn’t have the internal bandwidth to manage it all manually.” — Elizabeth Flood, SVP of Business Integration
Despite being a lean team, HR was tasked with untangling legacy systems, ensuring accurate state tax setup, and maintaining business continuity across jurisdictions—all during a high-growth, post-acquisition phase.
The Challenge: Managing Compliance During a Critical Transition
Leaving a PEO comes with both opportunity and risk. While MediaRadar would gain more control and cost efficiency, they also assumed responsibility for registrations, remittance setup, and maintaining compliance across a multi-state footprint.
Like many organizations going through a PEO transition, they faced:
- Uncertainty around who owned what (and when) during the transition
- The need to stand up tax and Secretary of State registrations across dozens of states—quickly
- A lack of centralized visibility into what was complete, in progress, or still required
- Time-sensitive tasks that, if missed, could lead to penalties or administrative backlogs
The HR team was fully capable, but they needed support to scale their efforts and prevent anything from falling through the cracks.
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Why Mosey
Mosey was recommended by MediaRadar’s benefits broker as a purpose-built solution for modern, multi-state compliance. What stood out immediately was that Mosey wasn’t just a one-time registration service—it was an end-to-end platform designed to simplify compliance operations and keep teams on track.
“We didn’t just need someone to file forms—we needed reminders, tracking, and the confidence that we weren’t missing something critical.”
Mosey helped the HR team navigate the transition with clarity, ensuring that all necessary state accounts were created and managed, while also serving as a system of record for compliance going forward.
Mosey’s Process
Mosey partnered closely with MediaRadar to manage the PEO offboarding and ensure a smooth compliance transition. The process included:
- A deep dive into MediaRadar’s multi-state footprint to identify every required tax and employer account
- Automated setup of state tax withholding, unemployment insurance, and SoS registrations
- A centralized platform where the HR team could track account statuses, view deadlines, and receive automated alerts
- Integration with payroll to support downstream tax remittance and verification
Mosey didn’t just handle setup—it gave MediaRadar the tools to confidently manage compliance over time, with a clear system of record and a structured way to monitor what had been done and what still needed attention.
“It probably saved us 80 hours of work—two full weeks of a generalist’s time. The savings were immediate, and the long-term value is even higher.”
Results
Since implementing Mosey, MediaRadar has:
- Saved 80+ hours of manual work
- Avoided over $4,000 in immediate labor costs
- Prevented compliance missteps during a sensitive transition
- Gained peace of mind with automated reminders and real-time status tracking
- Reduced internal overhead by consolidating all compliance activities into one platform
“You know how painful dealing with state agencies can be—forms, deadlines, phone calls. Mosey just took that off our plate and made it easy.”
What Stood Out to MediaRadar
- A true partner in transition. Mosey acted as an extension of the HR team, helping close the gap between what the PEO used to manage and what the company now owned directly.
- Clarity and visibility. Instead of scattered emails and tracking sheets, MediaRadar now has a single hub to manage all compliance requirements.
- Proactive alerts. From registration statuses to compliance deadlines, the team gets timely reminders and updates that help them stay ahead.
- Scalable support. As MediaRadar continues to grow, the team has confidence that Mosey will scale alongside them—across departments and jurisdictions.
Looking Ahead
Transitioning off a PEO is a major operational shift, and with that comes a natural period of adjustment. For MediaRadar, one of the most important realizations was that certain compliance responsibilities—previously handled automatically—were now in their hands. This included things like finalizing tax remittances, setting up new accounts, and responding to notices from various states.
With Mosey in place, the team had the structure and visibility to quickly identify what was needed, complete outstanding tasks, and move forward with confidence. The platform helped them close critical gaps, stay on top of deadlines, and ensure nothing was missed during the transition.
As they continue to grow, MediaRadar’s HR team now has a dedicated compliance infrastructure that supports their goals and gives them peace of mind—whether they’re handling registrations, monitoring requirements, or preparing for future audits.
