Dear Management,
I, Mr P Nis, hereby request a rise in salary for the following reasons: I do exhausting, hands-on physical labour. I work at great depths and plunge headfirst into everything I do. I do not get weekends or holidays off. I work in a damp, ill-lit environment with poor ventilation at very high temperatures. My work constantly exposes me to possible contagious diseases.
Yours sincerely,
P. Nis esq.,
Confuddled
Pro 
What about the benefits attached to the job??