Pay: Although I was more than fairly compensated while at Opus, I heard quite a lot of grumblings from others who worked extensive hours for little pay.
Benefits: No 401k match. "Perks" amount to your choice of 3 dry breakfast cereals in the kitchen, bagels on Wednesday mornings, and a yearly party that was mostly a metaphorical and literal stage for executive pageantry.
Lifers with limited experience: Most of the executive staff started in menial roles at Opus decades ago, never working anywhere else. Their limited experience and lack of sophistication around process is really starting to show now that they've acquired three companies.
Culture: Opus management likes to pretend they're transparent, open and honest, and that they have your back, but that was far from my experience. Cliques are rampant and if you're not in the right one, you may not advance.
Hours: Employees are expected to work long days (often over weekends and holidays) without acknowledgement. But heaven forbid if you have a family emergency and need to spend a few hours at the hospital...someone will reach out to you to ensure you took those hours as PTO!
Unsupportive executive management: I saw one middle manager belittled in front of dozens of people when she tried to bring up an issue in a meeting expressly meant to address process/managerial issues. The exec leading the meeting actually growled at her to "stop acting like a victim"...you can bet there wasn't a lot of sharing around the table after that. I've seen employees across every service line brought to tears by an abusive client, yet management refused to intervene or provide support.