That's quite an interesting question, isn't it?
It depends on the type of business you're involved in. For doctors, engineers and accountants, that's a no-brainer. It's compulsory, and the discussion ends there.
But about tech businesses in particular?
In its most basic form, Professional Indemnity Insurance typically covers negligence and miscalculation on consultation and services you provide. This coverage extends to your consultations and contractors, too.
This makes total sense for tech businesses. Most tech businesses want to scale fast, so they hire and fire fast. People come in, and people go out—it's a revolving door. That being said, the propensity for errors can occur more naturally, and they can be harder to trace, too.
It can also happen when everyone is (too) independent.
Picture this: You have made it past the startup stage. Your team and consultants are quite independent, and they can (finally) meet their numbers. Gone are the days when you were cc-ed on every email, and you were the one negotiating all the deals and managing every task.
The next thing you know, someone slips up, and the client suffers a loss. They're coming for you.
The buck stops with you. You will need to consider compensation or risk litigation. Work with your Professional Indemnity insurance provider to get you out of this pickle.