How Should I Update Our Trainee Letters with the Right Prefix for Different Roles?

I am currently working as a trainee in the HR department of a well-known laboratory. As a recruiter, we normally take candidates as trainees for 6 months and then on a probation basis after completing the trainee period. Since we recruit for multiple openings like Marketing, HR, Customer Support, and Purchase, while issuing the appointment letter, the subject we put is "Trainee." However, now my boss wants us to put a prefix in the subject as "Trainee - Jr. Officer" for HR, Customer Support, and Marketing Departments. After a long discussion with my senior, we tried to convince her that we cannot club two positions in a training period since we offer the designation "Jr. Officers" on probation.

We have to make changes in the first paragraph of our letter.

Format of Our Trainee Letter:

With reference to your interview you had with us, we are pleased to inform you that you have been appointed as a "TRAINEE" in our organization with effect from XX/XX/2013 for a period of six months commencing from XX/XX/2013 and ending on XX/XX/2014.

What prefix should I put along with the trainee?

Regards,

I do not find anything wrong with what your senior said. What is wrong with the designation "Trainee - Jr. Officer"? Anyway, now there is no point in going back. I will suggest how to strike a balance between your and your senior's expectations. You may phrase the wording like this:

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With reference to your interview with us, we are pleased to inform you that you have been appointed as a “Jr Officer” in our organization with effect from XX/XX/2013. You will be under training for a period of six months from XX/XX/2013 to XX/XX/2014. Your designation during your training period will be "Trainee - Jr Officer." Once you complete your training successfully, your designation will be "Jr Officer," and you will be put on probation for six months.

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Just check whether the above wording is acceptable to you.

Thanks,

Dinesh V Divekar