Personal assistants tend to work the regular 9 to 5 hours. In regards to days, some employers might need their PAs available all week, while some PA jobs have flexible or part-time hours. In general, if you’re looking to explore PA jobs in London, know that the working hours can be as low as 10 to 20 per week, and you might start with working only a couple of days. However, these hours may increase with career progression and gaining better clients.