The garbage man takes my garbage routinely, do I have to hire him on full time? I'm being absurd, but your criterion of 'fulfilling the routine operations' is not a good test for whether someone should be hired as an employee.
https://www.hrdefenseblog.com/2018/05/say-goodbye-to-indepen...
This is very similar to the IR35 tests that operate in the UK, although that legislation is primarily used for determining what tax should be applied.