>if you count employer contributions to employee heath insurance
You shouldn't.
>and employers probably shouldn't even be involved in sponsoring group health plans in the first place.
They are free to lobby for socialized medicine, but they don't because they like how the current system helps lock employees into bad jobs for any amount of healthcare.
If you're trying to understand changes in the share of income going to workers versus employers, then you must count those contributions. For the average family, employers pay $20,143 annually in premiums: https://www.kff.org/affordable-care-act/annual-family-premiu....
From the perspective of the employer, that's real money, no different than if they had paid the $20,143 directly to the employee as wages. It's not the employer's concern what happens to that money after they fork it over.
Maybe people would view it more like that if they actually had the option to get paid cash instead of an insurance plan of the same supposed value. With some employees that is possible to negotiate, but for the vast majority of employees with a healthcare plan that is a big no unless they are willing to accept a tiny fraction of the insurance value.
You shouldn't.
>and employers probably shouldn't even be involved in sponsoring group health plans in the first place.
They are free to lobby for socialized medicine, but they don't because they like how the current system helps lock employees into bad jobs for any amount of healthcare.