Take one piece of work: roughly thirty hours a week, ongoing, on your premises or your job sites, using your equipment. A contractor quotes an hourly rate that looks high next to the wage you would pay an employee for the same hours. That comparison is where most of the bad decisions in this area begin, in both directions.
What an employee actually costs above the wage
The wage is the visible part. Layered on top are the employer share of Social Security and Medicare, federal and state unemployment insurance, and workers' compensation premiums, which vary enormously by trade and are the single largest variable for physical work.
Then the things that are optional in law and not in practice: paid time off, any contribution to health coverage, tools, a phone, training and certification, the payroll service, and the hours somebody spends administering all of it.
The useful way to hold this is as a multiplier on the base wage rather than a list. Across most small employers, the fully loaded cost of an employee lands meaningfully above the wage, and for higher-risk trades the workers' compensation line alone can move it a long way.
What a contractor actually costs beyond the rate
The rate includes everything the list above covers, because the contractor is carrying it themselves, plus their own unbilled time, their insurance and their profit. That is why the number is higher, and it is not a markup for the same thing.
What the rate does not include is availability. A contractor with three clients allocates their week, and the week you need them most is frequently the week everyone needs them. Scheduling around that is a real cost that never appears on an invoice.
Nor does it include accumulated knowledge. Someone who works for you every day learns your customers, your systems and the peculiarities of your equipment. That knowledge is worth a great deal by year two and it does not transfer to whoever the contractor sends when they are busy.
Where the two diverge over three years
| Employee | Contractor | |
|---|---|---|
| Cost per hour, year one | Lower rate, higher loaded cost | Higher rate, no additions |
| Cost per hour, year three | Rises with raises, falls per unit as speed improves | Rises with their rate card |
| Quiet months | Paid anyway | Not engaged |
| Knowledge of your work | Compounds | Stays where it started |
| Ending it | Notice, possible unemployment claim | End of contract |
The pattern behind the table is that an employee is a fixed cost that gets better value over time, and a contractor is a variable cost that stays roughly constant. Which one is right therefore depends less on the rates than on how predictable the work is.
The part that is not a choice
Classification is not a preference. It is determined by the nature of the relationship, and the tests look at the same handful of things: who controls how and when the work is done, whether the worker has a genuine opportunity for profit or loss, whether they can work for others, who supplies the tools, and how permanent the arrangement is.
Thirty hours a week, on your schedule, with your equipment, indefinitely, is an employment relationship in substance whatever the invoice says. The wage and hour rules and the tax rules run separate tests, applied by different agencies, and a written agreement calling someone a contractor settles neither.
Getting it wrong is expensive in a way that arrives late: back payroll taxes with interest, unpaid overtime, penalties, and a workers' compensation claim from someone your policy does not cover. Unpaid overtime is the line that surprises people most, because the Department of Labor counts the hours somebody actually worked across the whole arrangement rather than the hours anybody invoiced for. Several states apply a test stricter than the federal one on top of that.
Where each genuinely fits
A contractor fits work that is defined by an outcome rather than by hours: a project with a start and an end, specialist work you need a few times a year, overflow in a busy season, or a skill you cannot justify employing full time. Someone with their own insurance, their own tools and other clients is a contractor in substance, and everyone is on solid ground.
An employee fits work that is continuous, that you need done your way, and where the learning accumulates. If you find yourself telling a contractor which days to come in and how to do the job, that is not a cost decision anymore. It is a classification one, and the answer is already settled.
How to decide it in an afternoon
Write down the hours the work actually needs for the next twelve months, month by month, from last year's records rather than from optimism. If the line is roughly flat, the employee arithmetic wins on cost and wins by more each year. If it spikes and disappears, paying a premium rate for the spikes is cheaper than carrying a wage through the troughs.
Then do the classification test on the arrangement you have in mind, before the first invoice rather than after the twentieth. It is the one part of this decision that a business does not get to choose, and it is much easier to set up correctly than to unwind.