Pros: none really
Cons: very poor supervisors.
Ever heard of "piece pay" or "piece work"?
Not many have, but this was a wage model when I was working there with three tiers of pay scale depending on your accuracy. Entirely 100% data entry. You were not only "encouraged" to wear your headphones, but talking with your coworkers was almost strictly prohibited.
When contract was re-worked, pay went down. You were expected to produce at least 9.00 per hour, and if your pay rate was, e.g. 8.37 they would "bump you up" to 9.00 per hour, but weren't happy about it.
You were expected to be at your desk working 85% of the time. To ensure this, a clock was running in the upper corner every second you were at your desk typing. If you stopped typing, the clock would stop. Minus your lunch and 2 fifteen minute breaks, being outside of that 85% mark was verboten. 84.27% was not good enough, and they literally had 2 digit qualifiers.
Supervisors spent a great deal of their time filling out reports for a very detail oriented supervisor.
If you worked faster, but your accuracy went down, you got paid at a lower tier.
If you worked slower, so your accuracy improved, you weren't getting as much done, so you were paid at a lower tier.
Your job - balancing between accuracy and speed and keeping at your desk 85% of the time.
If they could have hooked us up to catheters and gotten away with it, they would have done it.