Let's talk about the taboos of what you should and shouldn't ask your assistant to do. There are unspoken and unwritten conventions surrounding this. After all, we're not in the 1960s anymore and assistants shouldn't be treated like you've seen in the TV show "Mad Men."
Executive Assistants vs. Personal Assistants
First and foremost, there are some serious differences between "the rules" when someone is a PA vs. an EA. When an assistant, for example, works in a corporate office, the job descriptions will be unique to that industry and company; but HR should approve the job description, and changes must be signed off in writing by all parties involved.
While it's true that a personal assistant could have some executive assistant crossover duties if s/he were working in the home office (or Family Office), one can see that the PA and EA duties can be night-and-day different. An executive working in a corporate office shouldn't be asking an EA to do any personal errands or get coffee.
Assistant job descriptions should be very well-defined
An assistant's job description should be detailed and spell out the following:
In the personal assistant realm, it's admittedly a little more difficult to be as detailed about everything a PA will be doing because it is an A-to-Z job, but that doesn't mean that the boss can keep the PA out to 2:00 am going to nightclubs and asking the assistant to get phone numbers from the ladies in the bar.
If there might be any duties like that (i.e. Lifestyle Management to a traveling billionaire), then it absolutely should be discussed during the interview process; and the compensation package should reflect "combat pay."
Written for assistants and estate managers working for celebrities, CEOs, UHNW families, billionaires and royalty