Health ergonomics (no real topic idea at the moment)

i! i just finisched my postgraduate diploma in health ergonomics at university of surrey (UK). it was quiet difficult for me to to all the assignments but i got it. i really would like to to my master degree in health ergonomics but i dont have time to write the dissertation. now i found your site and it seems to be a very good possibility for me. in about 3 weeks i need to talk to my supervisor about my topic. i still dont have any idea about what the dissertation could be.
my question now. could you give me some ideas about a topic in health ergonomics? i would like to discuss these with my supervisor and promise you to let you write my dissertation.
greetings from switzerland and thank you so much for your help!
juerg