Here are some of those perplexing things about some persons:
a) they like to work
b) they like working in different industries
c) they like working in different locations at different times of the year
d) they may like working in positions that most persons think that would not be a good fit for them, however that position might actually be the one to hold them...
If you know anyone who might fit into this category, please send them this message either privately or ask them if they see themselves in any one of the above points... :)