I've been editing for Harrisco as a U.S. based part-time editor for almost four years (with one year off). Early in that time there were certainly some issues with on-time payment for completed assignments – which was the reason for me taking a break.
The company CEO continued to communicate periodically by email, promising all backpays would be completed and every month or so, deposits were made to my account in a good faith effort to ‘square the ledger'. The apparently genuine desire to fulfil its obligations, convinced me to resume taking assignments – in particular with a new payment system that didn't require waiting until the end of the month. Payment is now made by Paypal for each individual assignment.
Since I re-started (about 18 months ago), all payments have been made strictly on time and furthermore ALL of the backpay was paid. I have heard the company had some difficulties, but that seems to have been resolved. My experience over the last year and a half has been extremely positive and all of my interactions with the company have convinced me, they are highly professional and reputable.
The support staff I have worked with have been great – clear and early communication with them on issues such as how much work you can handle and deadlines, helps enormously. I am a part timer and only have limited number of hours to devote – and they have respected that.