What are the hiring incentives in Portugal?

According to the Decree-Law 72/2017, published on 21.06,

• A 50% reduction of the employer’s contribution for five years if he or she hires young graduates and for three years if he or she hires someone that had a long period of unemployment.
  
• A 100% exemption of the employer’s contribution for three years if he or she hires someone who had a very long unemployment period