I am overwhelmed my your responses, thank you everyone!!! This will be a long post - I warn you now!!
www - I'd hate to have to wade thro one of your long posts if that was a quick one!!
I don't want to go down the tribunal route, no point in burning any bridges just yet. I agree with you about the corporate ladder stuff, it never really was important for me, I was quite happy with the rung I was on. It's c**p having it kicked from under you tho.
My main fear of being a SAHM is that the ladder will have rotted completely, my experience will have been tucked away in a far corner of my brain never to be dusted off again due to lack of use. So I would like to 'keep my hand in' - maybe temporary contracts, working from home, or consultancy could be a possibility.
Thanks for your post www, set me thinking about other ways I can work if I can't persuade 'dinosaur' otherwise. I will ask him to put his objections in writing.
aloha - my job is not that impressive! I like your approach, I hadn't thought about my strong position - I am too willing to admit defeat. I think I made a mistake telling my line mgr that I couldn't cope p/t because of the number of objectives I'd been set - how I should have approached it was ' These are for a full time job, how about being more realistic?' I wonder if I have pulled the rug from underneath myself already? Anyway, that is the approach i will take from now on.
Janeway - a family man is seen as trustworthy and loyal because he is less likely to quit an underpaid job because of his commitments - after all his wife had to give up work when the kids arrived, and his is the only income!!
I think the dinosaur boss thinks he HAS considered my request seriously. We had a conversation about my return to work before I went on mat leave. He had all sorts of reasons why not- very much related to long hours culture and working in a totally non flexible way! It was only due to my line mgr that I managed to have 3 mths p/t.
Marina - thanks for the link. Several engineers I knew at uni also defected, money had a lot to do with it, and perhaps they didn't fancy wearing hard hats and safety boots every day
JanZ - I knew about 1 April and the flexible working. Wonder if thats why I was only given until the end of March?
tigermoth- I will ask for examples of why p/t will not work. My next step is to talk to HR. Unfortunately I don't belong to a trade union.
Sis - thanks - how do I send my phone no? email mumsnet with it to pass on to you?
In summary, thanks folks, I won't give up and resign just yet. Perhaps HR will be supportive, my line manager and I come up with a good way for me to work that will be acceptable to dinosaur (must remember not to refer to him as this at work ).
I must remain positive, after all I am too good for them to lose! But it is not the end of the world if it doesn't work out, your comments have given me ideas about networking, consultancy, and contacting recruitment firms to look for more flexible engineering work.