There are two main types of employees: staff members and freelancers. So, the establishment of relations with different employees requires different types of contracts. You can find needed templates on the official government websites or use the legal services of local lawyers from Upwork.
Don't forget to ask your accountant to describe the difference between a staff member and a contractor to take into account diverse social tax rates and other variances. Also, use local social tax and salary calculators for these purposes, it's easy to find the proper one on Google (in the case of Estonia, freely use our own tax calculator
Explore the previous section on the matter of contracts generation — the action plan is the same here. Also, don't forget to save all data to Airtable, this will significantly simplify monthly docs creation for your accountant.