I'll try and keep to the main points so it's easier to read and before anyone says, I have requested a meeting with HR and my union for advice, just wanting advice in the meantime.
In January I handed my 3 month notice in as changes to childcare means I will no longer be able to work 9-5, atleast for the next 2 years. Manager told me verbally that they do not want me to leave so will be happy to change my hours when the time comes so I rescinded my notice on that basis.
End of March I informed them of the date I need my hours to change and they informed me that they are not sure I can change my hours now so will chat when back from my annual leave. The next day she phones and says that it will not be possible so I will need to put in another 3 month notice.
I handed my notice in (have been very upset and stressed) but really did not want to as I will not find another job at my level at the hours I need.
Since then I have spoken to colleagues and family and they have said that my manager cannot do this, it could be constructive dismissal. As I said above, I've requested a meeting with HR and my union, but I just feel so angry at the situation I am in. I was happy to leave in Jan as I had work lined up for when I finished, but I was falsely told I could change my hours and now I am back to square one and have to work another three months with no work lined up.
Sorry it's long and I hope it makes sense. Can anyone advise on what I should/could do?