Lab Fees and Associate Pay: Who Pays and How to Deduct

When an associate is paid a percentage of production or collections, the lab bill attached to that work has to land somewhere.

Which base the percentage applies to is the territory of our guide to associate pay models; the lab clause decides what happens to one specific cost inside that base.

There are three structures.

• The practice absorbs the lab bill. The associate is paid their percentage of full production and lab invoices stay a practice expense, like rent or sterilization supplies. Nothing is deducted, so there is no wage-deduction question to manage.
• Lab is netted out before the percentage. The pay base becomes production minus the lab cost of the associate's own cases, and the percentage applies to the net. Written this way, the lab adjustment is part of the formula that defines pay — it never touches pay already earned.
• The lab bill is split. The associate bears an agreed share — whatever you negotiate, such as the same percentage they are paid on production — and the practice bears the rest. The split can be built into the base up front or charged back after pay runs, and the charge-back version is the one the wage-deduction statutes below police.

Side by side:

No external default we could find sits behind any of this.

Our research found no ADA guidance on how lab fees should be handled in associate agreements, so an agreement that is silent on lab does not fall back on a shared understanding — it falls back on a disagreement.

The three structures pay differently from identical production, and the ordering never changes.

Call the period's production P and the lab bills attached to it L: absorb the lab, and the associate's percentage applies to all of P; net the lab out, and the same percentage applies to P minus L; split the cost, and it applies to P minus the associate's agreed share of L — half of L, if the split is even.

At any given percentage, netting pays less than splitting, which pays less than absorbing, so long as the split leaves the associate bearing part — but not all — of the lab cost; the gap grows with every lab-dependent case on the schedule.

The lab adjustment and the headline percentage also move the same dial: net the lab out of the base and trim the headline percentage, and you have moved the rate twice.

A candidate comparing offers can work out the combined effect even if the agreement never states it.

There is also no benchmark to anchor the adjustment against.

Our research found no primary or ADA source establishing a standard associate percentage, so the only comparison that means anything is the effective rate your own formula produces.

The associate's side of that comparison — how production, collections and guarantees stack into take-home pay — is covered in our career guide on associate compensation.

This page stays on the practice side of the table.

A vague clause leaves the expensive edge cases undefined, so the definition of “lab fees” has to do real work.

Four categories to name:

• Routine case invoices. Crowns, bridges, dentures and the other lab work billed in the ordinary course.
• Remakes. When a case has to be redone, the lab may credit part of the original fee or bill again. Decide whether a remake follows the same treatment as the original case or is absorbed by the practice as a quality-control cost, and write the choice down. Absorbing remakes is easier to defend while an associate's technique is settling; sharing them keeps a repeated remake pattern visible. Either is workable — silence produces the argument.
• Implant components. Implant bodies, abutments and similar parts may arrive on the lab invoice but behave like inventory rather than a service. Say whether they sit inside or outside the lab definition, because one surgical case can move a netted base far more than a crown does.
• Case-specific supplies versus general overhead. Materials consumed by a particular case can be attributed to it; general supplies cannot. Keep overhead out of the lab definition — the wage-law cases below are harshest precisely on deductions that spread a practice's cost of doing business onto an employee's paycheck.

One boundary worth keeping bright: the chair, instruments, imaging and technology you provide are practice costs.

Charging those against an associate's earned pay is the tools-of-the-trade problem the federal rule below addresses — a rule whose reach depends on the worker's exemption status — and no lab clause should drift into it.

Start federal, because the federal baseline turns out to be the narrower of the two.

Under the FLSA regulations, a licensed dentist who is actually practicing is an exempt “practice of medicine” professional, the federal salary-level and salary-basis requirements do not apply to licensed, practicing dentists, and the FLSA's minimum-wage and overtime requirements do not apply to bona fide professional employees.

The upshot: the FLSA rule that wages count as paid only when paid free and clear — under which requiring an employee to bear costs such as tools of the trade violates the Act in any workweek the cost cuts into required minimum wage or overtime — has little bite against an exempt associate, because there is no federal wage floor for the cost to cut into.

It still reaches non-exempt staff, and any associate who is not exempt.

The limits that actually shape lab clauses are state wage-deduction statutes.

California and New York show the pattern.

California.

Labor Code 221 makes it unlawful for an employer to collect or receive back from an employee any part of wages already paid, and Labor Code 224 allows deductions only when they are required or authorized by law, or expressly authorized in writing by the employee for items such as insurance premiums or medical dues that are not a rebate on the agreed standard wage.

Courts applying those rules to commission-style pay have favored employees.

In a 1995 case against Neiman Marcus (Hudgins), a California appeals court struck down a policy of deducting, pro rata from commissioned employees' wages, commissions previously paid on returns that could not be traced to a particular salesperson — and treated commissions as wages protected by Labor Code 221.

The Ninth Circuit's unpublished Clark memorandum applied Hudgins to a California veterinary clinic: deductions from production-based wages for returned checks, refunds and collections that spread the clinic's costs of doing business were not allowed, “whether or not they are fair and reasonable.”

Carry Clark's limits with it: the memorandum is unpublished and may not be cited as precedent in the Ninth Circuit except as its rules allow, it involved non-exempt veterinarians rather than dentists, and it does not bind a California court — treat it as the closest illustration we found of charging practice costs against earned pay, not as dental law.

The same state's supreme court approved the other structure.

In its 2007 Prachasaisoradej decision involving Ralphs Grocery, a supplementary profit-based bonus calculated after subtracting store expenses — including workers' compensation costs — did not violate Labor Code 221, because once the bonus amount was calculated the employer took no deductions from it; the court stressed the plan was incentive pay offered over and above employees' guaranteed base wages.

Read together with Hudgins, that is the line this page turns on: define the pay base net of agreed lab costs up front, in a formula, rather than paying gross and deducting lab afterward.

Two caveats travel with the case — the Ralphs plan was supplementary incentive compensation sitting on top of guaranteed base wages, and whether its reasoning extends to an associate's primary production pay is unsettled.

One more California question stays open: Labor Code 2802 requires an employer to indemnify employees for all necessary expenditures incurred in direct consequence of the discharge of their duties, and whether 2802 limits a lab-fee-netting formula for an employed associate was not settled by any source we found.

If you practice there, put the drafted clause in front of California employment counsel before anyone signs it.

New York.

Labor Law 193 bars deductions from an employee's wages except those made under law or regulation, or expressly authorized in writing by the employee for the employee's benefit within the statute's listed categories.

A charge-back for lab bills does not fit either half of that test as we read it: our research found no New York law or regulation authorizing one, and charging the practice's lab cost to the employee is not a deduction for the employee's benefit.

That again makes the net-before-the-percentage structure the one that avoids the deduction question rather than the one that has to survive it.

Outside those two states, our research did not cover local deduction statutes, so treat California and New York as illustrations rather than a ceiling or a floor.

Fix the formula before work is done rather than reaching back into pay already earned, and employment counsel in your state can confirm how your own statute treats a netted base.

Because no default exists, the clause has to carry every decision itself.

The terms that do the work:

• What counts as a lab fee. The labs or invoices covered, plus each category from the last section — routine cases, remakes, implant components, case-specific supplies.
• The method and the share. Absorb, net, or split; if net or split, the exact share, and whether it tracks the associate's production percentage or a different figure.
• The base it adjusts. Production or collections, and where the lab adjustment sits in the sequence of other adjustments such as refunds — two “net” clauses in the wrong order can double-count.
• Timing and reconciliation. Lab invoices can arrive after the production they attach to. Say which pay period a case's lab cost belongs to and how a late invoice is handled.
• The floor. If a slow, lab-heavy stretch drives the netted base toward zero, say what the associate is paid. That is the guarantee-and-draw question — our guide to daily guarantees and draws covers reconciling it.

California, again, has the sharpest paperwork rule.

When an employee's pay involves commissions, the employment contract there must be in writing and set out the method by which the commissions are computed and paid, and the employer must give the employee a signed copy of the contract and obtain a signed receipt for it.

Whether a dentist's percentage-of-production pay is a “commission” under that statute was not confirmed by our research — a written formula is the prudent course either way — and it is this page's whole argument: the formula, in writing, keeps the lab clause on the defensible side of the line above.

The lab clause is one provision inside a longer document.

Our associate agreement guide walks the rest of it — term, termination, insurance, restrictive covenants — clause by clause.

A headline percentage is only as good as the base under it, and a net-of-lab base changes what that percentage is worth.

Put the formula in the offer itself, with a worked example run on your actual figures.

An associate who has seen “percentage × net-of-lab base” written out understands the check that arrives; an associate who discovers the lab adjustment on the first pay stub does not, and the conversation that follows is about trust rather than arithmetic.

Each structure also has an honest pitch.

Absorbing lab is the simplest to explain and positions lab as a cost the practice carries.

Netting lab first ties the associate to the variable cost their restorative schedule creates, and of the three it is the structure the California cases we cite above treat most favorably.

A split shares a cost both sides influence — the associate's case selection on one side, your lab pricing and choice of lab on the other.

Pay design is one decision in a longer hiring project.

The dental hiring hub collects the whole series, from posting to signature.