The retail behemoth admitted it was a "emotional matter," but claimed its policy had to change.
Wessex Water will begin reducing sick pay this week, and other large US corporations are penalising unjabbed employees.
In a time of worker shortages and growing expenditures,
Unvaccinated personnel at Ikea who test positive for influenza will receive sick pay in accordance with company policy.
Unvaccinated workers who are compelled to isolate due to close contact might now receive as little as £96.35 per week - the SSP minimum.
Ikea pays between £400 and £450 an hour, depending on location, and employees receive improved sick pay. The Mail on Sunday initially reported the transfer.
Unvaccinated co-workers or those who are unvaccinated due to mitigating circumstances such as pregnancy or other medical reasons will get full pay, Ikea stated in a statement.
"Unvaccinated coworkers who test positive with Covid will receive full company sick pay in accordance with our company absence policy."
"Unvaccinated coworkers identified as close contacts of a positive case will be paid Statutory Sick Pay."
A second dose of vaccination is required in England if you have been in close contact with a Covid infected person. Anyone contacted by the government's test-and-trace system must still be isolated.
Many businesses reported labour difficulties in 2021, and now the more infectious Omicron Covid strain is causing mass absences.
On Monday, Prime Minister Boris Johnson reiterated that the unvaccinated were still the most severely afflicted by Omicron.
This week, Wessex Water changes its sick pay policy.
If an employee is obliged to self-isolate owing to close contact with someone who has tested positive for Covid-19, they will only receive statutory sick pay.
According to a Wessex Water representative, vaccination rates have risen this year.
"Covid absences have increased in the previous week, so we need everyone available to keep crucial water and sewerage services running."
During the epidemic, the corporation said no one was laid off and those self-isolating were paid.
Last year, Morrisons slashed sick pay and Citigroup instituted a "no jab, no job" policy. Unvaccinated Delta Airlines employees paid a fee.
The Chartered Institute of Personnel and Development's (CIPD) Ben Willmott told the BBC that modifying sick pay terms for some workers had benefits and drawbacks.
It may encourage personnel to be vaccinated, but it may deter others from self-testing or self-isolating because they cannot afford the statutory charge of around £96.
His organization's stated recommendation was not to distinguish between employees due to complex legal implications.
"You'd have to manage it case by case," Mr Willmott added.
Recently, David Josephs, CEO of food importer and retailer All Greens, told the BBC that some companies were breaking Covid guidelines to save money.
Our sector is known for not paying sick leave. Staff on restricted contracts or minimum income cannot afford to be unemployed," he remarked.
CMS employment lawyer Sarah Ozanne said balancing legal problems was tough.
"Ikea's conduct appears to be a reaction to staff shortages and how to manage them," she said.
"But companies should examine if their actions are proportionate to re-hiring employees."