-ee — one who receives the action, person affected (affix)

employee A2

/ˌɛm.plɔɪˈiː/ A person who is paid to work for a company or another person M S

referee B1

/ˌɹɛfəˈɹiː/ An official who makes sure the rules are followed in a sport. M S

trainee B2

/tɹeɪˈni/ A person who is being trained for a job. M S

nominee B2

/ˌnɒmɪˈniː/ A person who has been officially suggested for a job, position, or award. M S

addressee B1

/ˌædɹɛˈsiː/ the person that a letter or message is sent to M S