What Is OSP on a Payslip? Occupational Sick Pay Explained

The three letters nobody explains

You're checking a payslip. Most of it makes sense. Salary, tax, National Insurance, pension. Then, sitting in the middle, three letters: OSP.

Maybe there's a number next to it. Maybe there's a minus sign, which feels alarming. Either way, nobody has ever explained it, and the payroll software certainly isn't going to.

Whether you're the person being paid or the person running payroll, here's the plain-English version. Kettle on.

What does OSP mean on a payslip?

OSP stands for Occupational Sick Pay. It is sick pay your employer chooses to provide under your contract or staff handbook, on top of the legal minimum. If you see an OSP line on a payslip, it means sick pay from the company's own scheme was paid in that period, shown separately so it's clear which part of your pay it was.

The legal minimum, by contrast, is Statutory Sick Pay (SSP), which is set by the government and works the same in every UK business.

That's the whole answer. The rest of this post is the detail that stops the follow-up questions.

OSP vs SSP: what's the difference?

The two get muddled constantly, so here's the split:

• SSP is the law. Every qualifying employee gets it, at a flat weekly rate set by the government. Since April 2026 it starts from day one of sickness, a change that caught a lot of small employers out.
• OSP is a choice. There is no legal duty to offer it. If a business does, the scheme design is entirely up to them: how much, for how long, who qualifies, and what evidence is needed.
• They usually appear together. A generous employer's payslip might show SSP (the statutory bit) plus OSP (the top-up to full pay). The two lines added together are your sick pay.
• SSP has a rate. OSP has a policy. If you want to know your OSP entitlement, the answer is not on the government website. It's in your contract or staff handbook.

Why does my payslip show an OSP deduction or contra?

This is the one that generates worried phone calls, so let's kill the mystery.

When you're off sick, many payroll systems process it in two moves:

• Move one: your normal salary is reduced for the days you were off. That shows as a minus line, sometimes labelled "OSP contra", "OSP gross reduction" or similar.
• Move two: sick pay is added back as its own lines, OSP and, where relevant, SSP.

If your scheme pays full pay while you're sick, the minus and the plus cancel out and your total is unchanged. It looks odd, but it's just the payroll system showing its working, the same way you were told to in maths class. It also matters for the records: HMRC, tribunals and auditors all like to see sick pay identified separately rather than buried in salary.

If the numbers don't net off to what you expected, that's the moment to ask payroll to walk you through it, because either your scheme pays less than full pay (common and legitimate) or something's been keyed wrong (also common, less legitimate).

Is OSP taxable?

Yes. OSP is pay. It goes through PAYE like the rest of your wages, with income tax and National Insurance deducted as normal, and it counts as pensionable earnings in most schemes. There is no special tax treatment for sick pay, statutory or occupational.

How much OSP should you get?

Whatever the scheme says, and schemes vary enormously. Common shapes:

• Full pay for a period, then half pay, then SSP only. The classic. For example, four weeks at full pay, four at half, rising with length of service.
• A flat number of paid sick days per year. Simpler to run, popular with smaller businesses.
• Discretionary. The handbook says sick pay "may" be paid. This gives the employer flexibility and the employee uncertainty, and it has to be exercised consistently or it becomes a grievance generator.

If you can't find the answer in your contract or handbook, ask. If the answer is a shrug, that's a policy gap, which brings us neatly to the other half of the audience.

Running a small business? This is your bit

If you're the employer and someone's just asked you what OSP means on their payslip, the honest answer might be "whatever the payroll software did". That's fixable, and worth fixing, because sick pay is one of the places where vagueness gets expensive.

Three things to have squared away:

• A written policy. How much, how long, who qualifies, what evidence, and whether it's contractual or discretionary. If it's in the contract, it's a legal entitlement and you can't quietly not pay it.
• A scheme you can afford on a bad month. Two people off long-term at full pay is a very different cost to two people on SSP. Model it before you promise it. The full trade-offs are in our guide to the advantages and disadvantages of sick pay schemes.
• Payslips that make sense. If your payroll shows contra lines, make sure whoever answers staff questions can explain them in one sentence. Confusion reads as concealment, even when it's just accounting.

Mythbuster corner

• "OSP is a legal requirement." No. SSP is the legal floor. OSP is voluntary, but once it's in the contract it becomes binding.

• "A minus OSP line means I've been docked pay." Usually not. It's normally the salary-out, sick-pay-in bookkeeping described above. Check the lines net off correctly before assuming the worst.

• "Sick pay isn't taxed." It is. All of it, statutory and occupational.

• "Small businesses can't afford OSP." Some can't, at full-pay-for-months levels. But a modest, clearly-written scheme, even a handful of paid sick days, is affordable, appreciated, and far better than an unwritten habit of "sorting it out case by case".

The two-minute payslip check

Next time OSP appears on a payslip, whichever side of it you're on:

1. Find the OSP line and any SSP line, and add them up.

2. Find any contra or gross-reduction line and check the sums net off to what the policy promises.

3. Check the policy actually exists in writing. Contract or handbook, not folklore.

4. If any of those three steps fails, ask the question now, not at tribunal.

Sick pay is one of those topics that's boring right up until it isn't. Five minutes of clarity now saves a very awkward conversation later.

Kettle on. Payslips out.

Need a hand with sick pay?

If your sick pay arrangements live in the category of "we've always just sort of managed", that's exactly the kind of thing I tidy up for small businesses.

• Book a free HR Health Check for a quick, jargon-free read on where your people processes stand
• Read the sick pay schemes guide for the employer's decision in full
• See what changed with day-one SSP if your policy predates April 2026
• Listen to Buzzing About HR, new episodes every Tuesday