I'm going to be doing the odd day here and there for my old employer. Currently a student. They are unwilling to accept invoices from me for the time that I work, so I am being put back on their books.
Other than job security, which bothers me not in the slightest, are there any problems this might cause me? e.g. tax, N.I. contributions, etc. I intend to discuss all this with them, but looking for some info in the meantime.
I swore I'd never work for them again, but hey ho when you've not got much money your morals tend to disappear for a while :/

