More than 100,000 public sector workers have begun industrial action in the form of a work-to-rule.
Nurses, civil servants and special needs assistants are among those taking part in the action over delays in agreeing a new public sector pay deal.
Work & Technology Correspondent Brian O'Donovan told Behind the Story the action will "ramp up" next week as teachers become involved.
"The unions have said this is a work-to-rule, for now, but it will be ramped up to an all-out strike across the public sector on the 14th of October and another one on the 21st," he explained.
What is happening at Man City?
Manchester City have been charged with breaking Financial Fair Play rules over a nine year period, which started in 2009 and went on until 2018.
The UK Premier League said the independent commission found the club arranged 'sham' commercial deals with a number of its sponsors which were part of a disguised funding scheme - whereby those companies were only required to pay a portion of the relevant sponsorship fees.
Manchester City - which denies wrongdoing - said it will pursue an appeal.
Kieran Maguire, Associate Professor of Football Finance at University of Liverpool, told Behind the Story the language in the report speaks for itself.
"Accountants and lawyers tend to be very guarded in what they say, (but) accusations of false evidence, untrue comments, dishonesty – that is as brutal as it gets from the professionals," he said.
"And all of those comments have been directed towards witness from Manchester City football club."
Prof Maguire said what prompted the investigation was a hack of Manchester City's IT system by a Portuguese hacker, Rui Pinto.
Following the hack, German publication Der Spiegel published several articles on the club's finances.
Prof Maguire said the UK Premier League was gathering its own evidence and announced in February 2023 that it was going to prosecute the club.
He said any punishment that may be ultimately given to the club, which is owned by Abu Dhabi's deputy prime minister Sheikh Mansour, would need to be "some form of on-field punishment".
"There’s no point giving the head of a nation state a financial penalty; it’s the equivalent of me being a multimillionaire and getting a €10 fine for a parking offence," he added.
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