The wage slips contain sensitive information, including the employee’s address, National Insurance number, earnings, pensions benefits and tax contributions.
The Sun report that a new system was being trialled with a ‘lack of managerial staff overseeing the procedure’ which led to the HR blunder.
The mistake happened back on 9 March 2018, with the employees lodging a High Court compensation claim which could be worth up to £100,000.
A Manchester United spokesman said: ‘We take the data privacy of our employees very seriously and regret this isolated incident, which occurred in 2018.
‘Measures were put in place to prevent it happening again and we informed the Information Commissioner’s Office, which took no further action.’
A statement from Jonathan Whittle, of Your Lawyers, a firm which is representing 32 claimants was given to The Sun, reading: ‘The club’s billionaire owners should take responsibility for this error.’
On the field Manchester United are back in action on Sunday as they take on Liverpool in the FA Cup quarter-finals at Old Trafford.
It is Erik ten Hag’s last chance to win some silverware this season and help convince the new leadership team at the club that he is the man to remain in charge for next season and beyond.
While obviously not including the manager of the first team, there are expected to be significant job cuts at Manchester United after Jim Ratcliffe appointed a corporate restructuring firm to cut costs.
MORE : PSG prepare £75m bid to sign Marcus Rashford from Manchester United this summer
MORE : Manchester United ready to trigger release clause of Juventus star Bremer
For more stories like this, check our sport page.
Follow Metro Sport for the latest news on
Facebook, Twitter and Instagram.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.