I was once a TEMP

It's short for office temporary; an office worker hired, usually through an agency on a per diem basis, for a short period of time. I had done it mostly in the capacity of word processor/typist, data entry clerk, filing clerk, or--in the later years--administrative assistant. I also worked as a temp in the travel industry. My last short term assignment was supposed to have lasted 6 months. It got extended to two years. I entered the backlog data from one system into another for the Forensic Outpatient Program of the Department of Mental Health located at Men's Central Jail in Los Angeles County. Quite a mouthful.
I did get to meet celebrities, victims, and accused persons such as Rodney King, the Menendez Brothers, and others whose names I would not care to mention in polite company. (This was during the era when the Twin Towers were being built in Los Angeles).
I did other things that didn't secure me a spot in the world of commerce, trade, science, arts... I was also a background extra for television and movies; a face in the crowd, a juror in the jury box, a waiter, a patron at a bar. Sometimes there was need for a large group of humans--a cattle call--and background extras were summoned not only through Central Casting, but also from the Employment Development Department (the unemployment insurance division in California).
Back in the day before personal computers and cell phones, all assignments were made by telephone. When I was looking for work, I would sometimes call a dozen agencies two or three times a day to let them know of my availability. I'd have piles of time cards from different agencies... and I remember having to trudge my way to the agencies at the end of the pay period to pick up my check (because who wants to wait a week for the check to arrive in the mail?).
I worked in banks, law firms, architect firms, and non-profit agencies. I worked for a man who had Westinghouse quality parts manufactured in Taiwan and shipped to companies in South and Central America. I did bookkeeping, worked a switchboard, was a towel boy at a men's sauna, and worked as a sitter in a hospital. I even had an off-the-books job of driving female escorts to their appointments.
Now I work as a nurse and a labor union representative. My work days are Monday through Friday with federal holidays off. I accrue sick leave (something that doesn't happen in the temp agency world).
I took a look on GOOGLE to see if any of the old names I knew are still in business. ADIA has been around for a while. AppleOne is also a tried and true name. Kelly Services (makers of the Kelly girl) and Adecco are also names from the past.
Sometimes I do think about getting a second job. It's not as if I have a ton of free time, but getting overtime from my current employer isn't always easy. At 60+, however, I must look examine my options realistically.