well, up to recently, I'd have robustly disagreed with your assumption that part time workers end up with a bad deal, as the public sector organisation I work for is a very family friendly one.
However, I know one of my close friends and part time colleagues is pretty miserable about her stutus at work at the moment.
Three of us share an office. We all do the same job at the same grade. Two of us are full time. My friend has had a lot of time off in the last 18 months due to extended maternity leave and a bereavement.
She is frustrated that she has missed a lot of work experience, as the team's projects and objectives have changed quite a bit during the time she was away. Briefings from our manager are no subsitute for first hand experience so she feels she is constantly at a disadvantage.
As she is less experienced in the work we do, and is not at work for a full week to follow a task through, she feels she is often given the less exciting, less career enhancing aspects of projects.
As we are a very busy team, no one else can pick up her work on her days off. So this means she often ends up doing extra hours from home or coming into work for an odd few hours on her days off. I know she feels constantly guilty for not doing more.
On the days she is in, she often cannot get much of her work done, as our manager (naturally wanting to include her in team stuff) schedules team meetings and briefings for the days she is in. This means up to 50% of her time can be taken up with meetings where she is allocated tasks, only to find that she does not have enough remaining time at work to carry them through!
The other member of our team is very openly ambitious,unbelieviably untactful and can be very overbearing. She tries to be seen to 'supervise' my part time colleague, to enhance her own status as a would-be mananger of the team. When this happens I back up my colleague, but it does not make the issue go away. I have drawn our manager's attention to this situation but cannot do a lot more.
I can see how frustrated my friend is getting. I know she would not want to go back to being full time, as she really values her time at home with her young children, but it's much tougher for her being part time than full time.