"Mare Nostrum Law and Tax" Firm may assist you regarding what type of working contracts you should offer to those people that you hire or work with depending on each circumstance.   
We will advice you and your business firm about all what it follows:
•    How to complete the offer contract.
•    How to get every employee’s contract registered.
•    How to proceed with every one of the employees at the end of each month and tax year
•    How to proceed with resigning contracts if business relation falls out and contract has to be terminated.
•    How much every contract to every employee will cost you in Social Security contributions and Income tax retentions at source made on behalf of each employee.
•    How to proceed in case of being inspected by the Social Security authorities.
•    How to proceed with all formal obligations every time that documents must be signed between the parties and registered at the authorities.
•    How to proceed with employees’ absence at work with no reasons.
•    How to proceed and assist your employees in getting them registered locally at the closest clinic centres for working accident purposes.
•    How to proceed on behalf of both employer and employees in case of disability administrative applications towards the County Social Affairs department and Social Security offices.
•    How to take advantage of important reductions in Social Security payments in each ones of the individual circumstances that we treat with depending family relation, % of shares % of participation in the business, etc.