How does Service 1st Benefits support my business during open enrollment?

We personally manage the entire open enrollment process — from educating employees to handling enrollment forms and answering plan questions. Our goal is to make open enrollment smooth and stress-free for everyone.

Can employees contact you directly for help?

Yes. Employees can reach out to us anytime for questions about claims, coverage, ID cards, or plan details. We act as your team’s benefits partner, not just your broker.

What size businesses do you work with?

We specialize in serving small and medium-sized businesses, typically ranging from 1–200 employees. If you’re growing or planning to expand, we help scale your benefits as your team grows.

Do you handle communication with insurance carriers for us?

Absolutely. We take care of claims issues, employee changes, renewals, and any carrier communication so you don’t have to spend hours on hold.

Do you offer voluntary or supplemental benefits?

Yes. We can provide optional add-ons like disability, accident, or critical illness insurance to enhance your benefits package at little or no cost to the employer.

What types of group benefits do you offer?

We provide comprehensive group health, dental, vision, and life insurance options for small and medium-sized businesses. We help you compare plans, handle enrollment, and manage carrier communication.

What information do you need to provide a quote?

We typically need: Number of employees Basic employee census (age, gender, ZIP code) Current plan (if applicable) Desired benefits or coverage goals We keep the process as simple as possible.

Do you charge fees for your services?

No. Our services — including plan comparison, open enrollment, and year-round support — are provided at no additional cost to your business.

Part-Time and Seasonal Employees: What Benefits Rules Actually Apply

Charlie Hopgood

Sep 3

3 min read

As a business grows past 30 employees, part-time and seasonal staff become harder to treat as an afterthought — but the benefits rules around them are genuinely confusing, and getting them wrong creates real exposure. Here's what actually applies, and how employers actually track it in practice.

Full-Time Status Isn't About Your Job Title, It's About Hours

Under the ACA, "full-time" for benefits eligibility purposes generally means averaging 30+ hours a week (or 130+ hours a month) — regardless of whether you internally classify someone as "part-time." A worker you consider part-time on paper can still trigger full-time eligibility rules if their actual hours cross that line.

Seasonal Employees Have Their Own Carve-Out

A seasonal employee — generally someone in a role that customarily lasts 120 days or fewer, like summer or holiday-season staff — gets treated differently. Even if a seasonal worker puts in 30+ hours a week during their short window with you, you generally aren't required to offer them coverage, and they don't count toward your Applicable Large Employer headcount either. The protection only holds inside that 120-day window, though — if the role stretches longer than that, the seasonal exception stops applying.

How Employers Actually Track This: The Look-Back Measurement Method

Here's the part most small employers never learn until they need it: the IRS gives employers a specific tool for handling employees whose hours vary week to week, called the look-back measurement method. It works in three phases:

Measurement period: a window of 3 to 12 months (you choose the length, within that range) during which you track an employee's actual average hours.
Stability period: based on what the measurement period showed, the employee is either treated as full-time or not for a following period of at least 6 months — and if they qualified as full-time, that stability period has to be at least as long as the measurement period. Critically, once someone qualifies during their stability period, they generally stay eligible for that whole period even if their hours drop afterward.
Administrative period: a short gap some employers build in between the measurement period ending and the stability period starting, to handle enrollment paperwork.

For a brand-new variable-hour or seasonal employee, you're not required to offer coverage on day one — you can run their initial measurement period (also 3 to 12 months) and make the full-time determination from there, without automatic penalty exposure during that window, as long as you're actually applying the method consistently.

What Happens When You Rehire a Seasonal Worker Next Year?

Seasonal and part-time staff often come back year after year — think summer staff or holiday-season hires. The IRS has a specific rule for this called the rule of parity: if a rehired employee's break in service was at least 4 weeks long, and that break was longer than the period of employment that came right before it, you're generally allowed to treat them as a new employee for measurement-period purposes rather than picking up where their eligibility status left off. Get this wrong, and you could end up treating a returning seasonal worker as still eligible from a stability period that should have reset.

Your Plan Document Is What Actually Decides Eligibility

Beyond the ACA's floor, your specific plan document sets its own eligibility rules — waiting periods, minimum hours, which classes of employees are eligible at all. Two businesses can both be "ACA compliant" and still have very different rules for their part-time and seasonal staff, because the plan document is doing the deciding.

Where This Actually Goes Wrong

The most common mistake isn't malicious — it's a part-time employee whose hours crept up over a few months without anyone tracking it, until they'd technically earned eligibility nobody offered them. Without a defined measurement period, that drift is invisible until it's already a compliance problem.

What Employers Can Do

Formally adopt a measurement period length (3-12 months) rather than tracking hours informally.
Set an initial measurement period for new variable-hour and seasonal hires, so you have a defined point to make the eligibility call.
Apply the rule of parity consistently when rehiring seasonal staff, rather than deciding case by case.
Confirm your plan document's eligibility language actually matches what you're doing in practice.

Final Thoughts

"Part-time" is a scheduling label. Benefits eligibility follows actual hours worked, tracked over a defined measurement period — and having that structure in place before your part-time and seasonal headcount grows is a lot easier than reconstructing it after a compliance question comes up.