If you are salaried, as you said, then no. Unless it is clearly stated in your contract that they can do that.Employers are required to pay you and employers are also required to record your time worked.If you are wage based and PAYE is dependant on the timesheet, and therefore it was a legitimate oversight, then it is ok. That is known as an honest mistake.Basically if they did this as some kind of 'punishment' then it is unjust and illegal. Although I would seek to resolve the issue first in a more amicable way, rather than take drastic measures i.e. court action. The latter would almost certainly have a negative impact on your employment!In either case they may require you to submit that timesheet before you'll come to an amicable agreement.My advice: apologise for not being able to submit your timesheet on time and at the same time press for assertion that you will be paid arrears promptly, within reason (i.e. by the end of the week). Be careful not to make threatsu00a0 (i.e. of leaving) at this stage, or accusations (i.e. of unfairness) lest you cause a retaliatory responseu00a0 (i.e. further delay!).Good luck!P.S. don't raise the point with 'witnesses'. Make sure you talk to the person responsible one on one. If there are other employees around at the time you will receive a negative response.