Came upon this interesting article by Tony Calabrese in which he seeks to identify a range of possible components that would help someone populate a portfolio career. He identifies:
Career Continuation – As implied, it is one staying on the same career path they have been on. While one may put off retirement, this path also includes being involved in a similar position that takes advantage of the skills you have developed.
Career Change – Building on the concept of career continuation, this approach involves taking the skills of a past position and using them in a very different industry or organization. Or it could mean moving into both a very different position and career role. An example of this may be a human resources professional, who moves into being a business school instructor or an individual who loves to travel moving from their first position into a second career as a tour guide. The possibilities are endless provided one has the motivation to explore new directions.
Interim Assignments – For those unable to obtain a full time position, temporary work or contingency assignments afford one the opportunity to work for shorter, defined periods of time. Many of these assignments are obtained through the help of an agency who will help one seek out and alert them to such opportunities.
Project or Contract Work – This approach may involve working for your previous employer or an employer who offers similar type position as your first career, but needs your skills to focus on a particular project or assignment for a short-term or part-time basis. This is similar to the Interim Assignment, except you usually make the connection on your own.
Self-Employment – This includes becoming a consultant, acquiring a franchise, or buying or starting a business. It provides you an opportunity to work in a line of work you may have always desired but did not have the time to devote to before.
Volunteer Work – Many positions exist in this line of work for the government, in not for profits and in service organizations. Additionally the health services field often makes use of volunteers. While this work is unpaid, it many times can be the way to make contacts with others who may have available paid positions which make good use of your skills. However, you may not reach that point without having made the first step to offer your services so as to make the initial contact.
Charitable Work – While similar to volunteer work, it can also include doing fund raising activity for a religious organization or not-for-profit.
Board Memberships – These make use of your previous administration skills, help you to be actively involved with different organizations, and usually don’t take up a significant time commitment.
Home Work – Providing your services at a private residence to help someone with cooking, cleaning, maintenance, or parenting type of activities.
Study Work – Using the time as an opportunity to pursue a new degree or certification in a line of work that falls into any of the previous categories.
Some of these overlap with Charles Handy’s original definition but Tony takes it further.