For the individual auditor: if you're a chartered/certified accountant you can get into a lot of hot water, including possible jail time.
With this situation, there is a reasonable expectation for EY to lose clients. Partners will also face some consequence. Most likely they will be let go and removed from accreditation by CPA (in the US). There are several high profile cases where partners get sacked[0].
[0]: https://www.ft.com/content/5179fb94-fd6c-11e8-ac00-57a2a8264...
As for the guy sleeping in cupboards...the staff at those firms reguarly work 80 hour weeks (not the "I work 80 hour weeks counting all kinds of stupid things" but the "I was at the client site or in the home office for 80 hours this week". It was a very common occurence for hard working staff members to take naps at the client (most likely because last night was a 2am night). Promotions at these firms are often very competitive as the organization is an "Up or out" organization designed to chew up fresh college grads.
The peer review is conducted by an independent evaluator, known as a peer reviewer. The AICPA oversees the program, and the review is administered by an entity approved by the AICPA to perform that role. 2. The peer review helps to monitor a CPA firm's accounting and auditing practice (practice monitoring).
That's a big claim for you to make given that you don't know the company, the size of their clients, or even whether or not anyone went to jail over the proceeding decades.
Best plan for everyone is to get out of shady companies like that ASAP.
Ok so that's not how things usually work?
In most? companies internal auditors do real work, would you say? (I'm clueless)