Prime Nurses Won Two Union Votes This Week, and Their Paychecks Just Got Harder to Cut

Jason Nunez, RN
Staff RN · Map My Pay Co-Founder · September 28, 2026

Two weeks ago, the Prime story was about nurses losing things. Twenty nurses at Central Maine Medical Center (CMMC) in Lewiston, ME were fired or suspended before their vote, and the reason on each letter decides who gets unemployment. The labor board had blocked an election in Evanston, IL. The hospital was suing the union. All of that came within two weeks of the September 3 walkout at four Prime hospitals.

This week the nurses won something. Olympia Fields voted on September 23, and CMMC voted 204 to 21 on September 24. The question I have heard most since is what nurse pay after a union vote looks like before any contract exists. Most nurses expect the answer to be nothing, and on raises they are right. On protection, the answer starts on election day, and it covers more of the paycheck than most of us realize.

What happened in Prime's union votes this week?

Nurses at two Prime hospitals voted to join unions tied to National Nurses United, and both votes were lopsided. At Central Maine Medical Center in Lewiston, ME, the count came in at 204 to 21 on the night of September 24. The unit holds about 290 nurses. The 15 nurses the hospital fired and the 5 it suspended in the weeks before were not allowed to vote. A day earlier, nurses at Olympia Fields Hospital south of Chicago voted 82% in favor. The local paper counts about 260 eligible nurses there. The union's own release puts the unit at about 400, so I have listed both.

Prime declined to comment to the local paper on the Olympia Fields result. On CMMC, a hospital spokesperson told WABI that no nurse was fired or suspended for union activity. The same spokesperson told the Sun Journal the hospital is weighing its legal options. It cited what it called intimidation and false claims during the campaign. The union says it is filing federal charges over the firings. Gov. Janet Mills had already asked the hospital to rehire the nurses the day before the vote.

Organizers expect the labor board to certify the CMMC result about a week after the count. If Prime files objections, certification waits until the board rules on them. That wait changes less than it sounds, and I will get to why.

Does nurse pay change after a union vote?

Not on the next check, and probably not for a long time. A vote gives nurses a bargaining team and a seat at the table. It does not give them a contract, and the raise most nurses picture only arrives when a contract is signed. A first contract can take two years, and nothing in federal law requires the hospital to pay nurses back for the wait.

Dues work the same way. Nothing comes out of a CMMC or Olympia Fields check until a contract exists, because nurse union dues start with the contract, not the vote. So the paycheck a Lewiston nurse gets next Friday should look like the one she got two weeks ago, in both directions.

The change is in who decides. Before the vote, Prime could rewrite a differential, freeze a step increase, or change how PTO accrues, and the only limit was the state's wage laws. After the vote, the same change needs to go through the union first.

What can't Prime change now?

Once workers choose a union, federal law says the employer has to keep pay, hours, and working conditions as they are. It cannot change them until it bargains with the union first. The Supreme Court set that rule in 1962. The labor board tightened it in 2023 in two cases called Wendt and Tecnocap. Under those rulings, an employer cannot use its old habits from before the union as an excuse to keep changing pay on its own. The terms in place on election day are the terms. They stay put until the two sides agree on something new or bargain to a standstill.

For a nurse, that rule reaches almost every line on the pay stub.

Base Pay and Raise Schedules

The hourly rate a CMMC nurse earned the week of September 24 is now the floor for bargaining. If the hospital ran a yearly step raise on a set schedule, the labor board treats that schedule as part of the deal. The hospital has to keep paying it. The union has to be told before it changes. A raise the hospital handed out whenever it felt like it, with no set amount or date, is the one that is not locked in. There was never a pattern to hold.

Shift Differentials and PTO

Night and weekend differentials are wages, so they sit inside the same rule. The rate a nurse earned for a Saturday night on September 24 cannot drop without notice to the union and a chance to bargain. PTO accrual works the same way. The hours a nurse earns per pay period and the cap on her balance are working conditions, and both stay as they were. Prime has owned Central Maine Healthcare only since February, and a takeover normally puts PTO and seniority in the new owner's hands. The vote takes that back.

Health Premiums

Health insurance is the one people forget. The employee share of the premium is a term of employment. If open enrollment comes around this fall and the hospital wants nurses to pay a bigger share, it has to bargain that with the union first. Unions that have been through this stretch tell members to write down their current premium for exactly that reason.

What can Prime still change?

The rule is strong, and it has three doors. A nurse should know where each one is, because a change that comes through one of them is not a violation, and taking it to the union as one wastes the union's time.

The first door is agreement. If the union sits down with the hospital and accepts a change, the change is legal. The second is a true emergency. The labor board lets an employer act alone when a sudden, serious event forces a decision before bargaining could happen. Lawyers give a sudden loss of a major payer as an example. Lawyers who advise hospitals describe that door as narrow. A hospital that wants to use it has to prove the emergency, not just claim one. Ordinary money trouble does not open it, and that is the kind Prime has cited at Central Maine for months.

The third door is discipline. Under a 2020 board decision called 800 River Road, an employer does not have to bargain with a new union before it writes a nurse up, suspends her, or fires her. The condition is that it follows the policies it already had. That decision still stands. So Prime can keep disciplining CMMC nurses under its existing rules without bargaining each case. It cannot write new rules, raise the penalty for an old one, or single out nurses for union activity. The union has already told the labor board that is exactly what the 20 firings and suspensions were.

There is a fourth situation that is not a door so much as a wall. If bargaining goes on long enough to reach a true deadlock, an employer can put its last offer in place on its own. That is what Henry Ford Genesys did after a year of talks, and it is a long way off for two units that have not picked a bargaining team yet.

When does nurse pay after a union vote become protected?

On election day, not on certification day. This is the part I would want every CMMC nurse to hear, because the hospital has said it is looking at its legal options. If Prime files objections, the labor board could take weeks or months to rule, and the union will not be certified until it does. A nurse could easily assume nothing is protected during that wait.

The board has held for more than fifty years that an employer who changes pay or working conditions while objections are pending does so at its own risk. If the objections fail and the union is certified, the duty to bargain is dated back to the vote. Every change made in between becomes a violation the hospital has to undo. An employer who loses its challenge can be ordered to restore the old differential, pay back the difference, and bargain over it properly. Prime can fight the result and still be bound by it.

There is one thing to watch. The board's top lawyer released a memo on August 26 naming Wendt and Tecnocap as rulings she wants revisited. A memo is not a ruling. Employment lawyers are telling their clients to follow the current standard until the board itself changes it. If the board does loosen the rule next year, the change would touch how much an employer can lean on its old habits. The core duty to bargain before cutting pay comes from the Supreme Court, and it is not up for review.

What does the vote protect in dollars?

Prime does not publish its pay scales. So I used the median RN wage in each city from our database as the stand-in for the paycheck the vote now protects. The figures below show what a nurse earning that median keeps each month after federal and state taxes, before rent. That number, or your own version of it from a September pay stub, is the baseline the union walks into the room with.

Source: Map My Pay city database, BLS May 2024 metro wages, 2026 federal and state tax rules, single filer. Lewiston rent averages $1,398 a month, which leaves the median nurse there $4,021. The Olympia Fields rent figure in our database is under review, so I have left it out.

To put a cut in scale, a 5% trim to the Lewiston median would cost that nurse about $4,465 a year before tax. A 3% raise would add about $2,679, and 3% is close to what median RN base pay moved nationally this year. Neither number is a Prime figure. Nothing here should be read as a raise the hospital owes anyone. What changed this week is that Prime cannot make the first move on its own anymore, and the second one is what the bargaining team will spend the next year asking for.

What should a nurse save from the week of the vote?

The rule only helps a nurse who can show what the terms were. Prime keeps the payroll records. If a differential quietly drops in November, the union will need proof of the September rate to file a charge. Three documents cover almost everything, and they take about ten minutes to collect. This applies to any nurse in any organizing drive, not just the two units that voted this week.

Save a Pay Stub

Download the stub for the pay period that covers election day, plus the one before it. Between them, they show your base rate, every differential you earned, the PTO you accrued, and your health premium. Keep the PDF outside the hospital's system, because a portal login can vanish with a badge.

Copy the Differential and PTO Policies

The stub shows what you were paid, but it does not show the schedule the hospital promised, and that lives in the policy. Screenshot the differential schedule and the PTO accrual table from the handbook or intranet, with the date visible. If your unit has a written raise schedule or a clinical ladder with set steps, copy that too. A scheduled raise is part of what the vote locks in.

Write Down This Year's Premiums

Write down your health plan, your share per paycheck, and the deductible. Open enrollment is the most common moment for an employer to shift costs without calling it a pay cut. A nurse with last year's numbers in hand will spot it in seconds.

Twenty CMMC nurses lost their jobs or their shifts in the weeks before this vote, and the ones who stayed voted 204 to 21 anyway. The raise they are hoping for is a year or more away, and I will not pretend otherwise. What they won this week is quieter than a raise. As of September 24, the paycheck they already have belongs to the table, not to Prime.