Use contractions to establish a personal, informal tone.
Contractions are not appropriate for very formal or ceremonial documents such as contracts or legal notices. However, contractions lead to a conversational, friendly tone in most other business correspondence. Contractions are common in electronic mail (email) messages because they cut the amount of screen space required.
We’re excited that you’ll be joining our sales force!
It’s been a long time since you’ve come to see us.
See LETTERS, TONE, and contractions in WORD PROBLEMS.
Don’t confuse contractions with possessive pronouns.
It’s (it is) a regulatory issue.
The company lost its lease.
There’s (there is) no time to waste.
The contract is theirs if they want it.