Workers' compensation is not optional coverage; it is a statutory obligation in nearly every state once you have employees. It pays medical treatment, a portion of lost wages, rehabilitation, and death benefits for work-related injuries and illnesses, without regard to fault. In exchange, it is generally the exclusive remedy — employees give up the right to sue you for those injuries.
Part Two of the policy, Employers Liability, is what most technology contracts are actually referencing when they specify limits like $1M/$1M/$1M. It responds where the exclusive remedy breaks down, and it is the piece a customer's insurance exhibit will check.
The complexity for technology companies is geography. Coverage is written state by state. Ohio, North Dakota, Washington, and Wyoming require you to buy from a state fund rather than a private carrier. If you hire an engineer in one of those states without adding it, you have an uninsured exposure and a compliance problem. Texas permits employers to opt out entirely, with meaningful legal consequences for doing so. This is a maintenance job, not a one-time purchase — and it is one of the first workflows worth automating.