I have a part time job and normally work around 20 hours a week although this varies according to time of year and workload and I am paid by the hour. I am the only employee so am my employer's right hand person (and general dogsbody!). Earlier in the year I had an offer of another (full time) job. I discussed this with my employer (probably shouldn't have done) and decided not to take it. He now has an issue with the fact that I could have gone in a month when I am so important to the company and wants to formalise things with a contract with a three month's notice period. What rights do I have and what views do people have?