Almost every letter that moves through an HR department or a small business owner's inbox belongs to one of a few recurring categories. Once you can name the category, picking the right letter — and knowing what it needs to say — gets a lot faster.
Hiring and employment status
The earliest letters in someone's time at a company set expectations before day one and mark milestones after. An Offer Letter comes first, followed by an Appointment Letter confirming the formal terms and a Joining Letter once the person actually starts. Later, a Promotion Letter, Salary Increment Letter, or Confirmation Letter (converting probation to permanent) mark forward progress, while a Warning Letter or Performance Improvement Letter document the other direction — each with its own tone and level of formality.
Resignation and exit
Leaving a job generates its own paper trail on both sides. An employee submits a Resignation Letter, which the employer responds to with a Resignation Acceptance Letter and, depending on notice served, a Notice Period Letter. On the way out, a Relieving Letter confirms the last working day, an Experience Letter summarizes the role and tenure, and a Full & Final Settlement Letter closes out any pending dues. A Termination Letter or Retirement Letter covers the two other ways employment can end.
Requests an employee sends upward
A good chunk of internal letters flow the other direction — from employee to manager or HR. That covers a Leave Request, Sick Leave notice, Work From Home Request, Salary Advance Request, Transfer Request, Promotion Request, Salary Revision Request, and NOC Request (commonly needed for a visa, loan, or a new job elsewhere). These read best when they're specific and brief rather than over-justified.
Certificates and verification
Separate from requests, some documents exist purely to confirm a fact for someone else — a bank, a new employer, an immigration office. That's an Experience Certificate, Employment Certificate, Salary Certificate, Employment Verification letter, or Internship Certificate, plus the more personal Recommendation Letter and Reference Letter written on someone's behalf rather than about a fact.
General business correspondence
Everything else that isn't specifically about one person's employment status lives here: a Cover Letter or Job Application for someone applying in, a Business Proposal or Meeting Request for moving something forward, and the more situational Thank You Letter, Apology Letter, Complaint Letter, Authorization Letter, Payment Reminder, and Contract Renewal/Termination Letter.
All 41 of these live under TeckForge's Letters category, each with four letterhead templates, a logo and signature upload, and a fully editable, pre-written body you can regenerate or rewrite by hand — then export as a polished PDF, generated entirely in your browser.
