Skip to content

Scope and changes

Back charges: issuing one fairly and answering one

By Review.LivePublished 3 min readHow we write

A letter from the general contractor arrives on Friday afternoon: a $4,800 back charge against your masonry company for cleaning mortar off the level 3 curtain wall. There is no photo and no date, and it is the first you have heard of it. Your foreman says his crew has not worked on that elevation this month.

Close view of a hand spreading mortar with a trowel along a course of red bricks.
Photo: Gowtham AGM on Unsplash

A back charge is a deduction for work someone else had to do because a trade did not: cleaning, repair or correction that was theirs. It is fair when the trade was told in writing, could fix it and can see the cost. The inspection clause in US federal fixed-price construction contracts shows one sequence: the contractor corrects rejected work at no charge, and if it does not do so promptly, the government may have others do it and charge the cost.

Issuing a back charge

  1. Check the contract or subcontract: whether back charges are allowed, the notice required, the time to correct and any markup.
  2. Notify the trade in writing when you find the problem, with photos and a date to fix it.
  3. Give them the chance to correct it, unless safety or the schedule prevents it, and record why.
  4. If you correct it yourself, record the cost as you would on a time and material (T&M) ticket: crew, hours, materials and photos.
  5. Issue the charge promptly with the notice, photos, cost record and clause, not months later in the final account.

When you receive one

  • Ask for the notice, photos, dates and cost records if they are missing.
  • Check whether the notice and chance to correct that the contract requires were given.
  • Check your daily reports and photos for who worked there, and when.
  • Reply in writing within the contract's time: accept, dispute with reasons, or accept part.

Common mistakes

  • Deducting first and producing evidence only when challenged.
  • Fixing the work before telling the trade.
  • Charging a round number with no record of hours or materials.
  • Ignoring a charge you dispute instead of answering it in writing.

Action list

Before a charge goes out, or when one comes in

  1. Read the back-charge and notice clauses
  2. Give notice in writing, with photos and a date
  3. Allow a real chance to correct, or record why not
  4. Record the cost like a T&M ticket
  5. Answer every charge you receive in writing

Check your understanding

A trade's defect must be fixed today to keep a pour on schedule. How do you keep a later back charge fair?

Show the answer
Tell the trade in writing before you start, with photos and the reason you cannot wait. Record the correction like a T&M ticket, signed by their foreman if possible. They still get notice and evidence, even without the chance to make the fix themselves.

Sources

  1. FAR 52.246-12, Inspection of ConstructionU.S. General Services Administration (Acquisition.gov) · United States (federal fixed-price construction contracts) · accessed
  2. Construction Act, R.S.O. 1990, c. C.30, sections 6.5, 6.7 and 13.5 (payment deadlines, reasons for non-payment, adjudication)Government of Ontario (e-Laws) · Ontario, Canada · accessed
  3. O. Reg. 264/25, Adjudications under Part II.1 of the Act (section 19, matters that may be adjudicated)Government of Ontario (e-Laws) · Ontario, Canada · accessed
  • Two workers in white hard hats and high-visibility vests talk over a clipboard beside stacked precast concrete slabs.

    Scope and changes

    Writing a T&M ticket the client will sign

    Write a time and material ticket on the day of the work — description, direction, labour, equipment, materials and photos — so the client signs it.

    3 min read

  • A damaged wall with its facing broken away to the brick, fenced off on the sidewalk with crowd barriers around the debris.

    Documentation

    How to record damage and incidents on site

    Once people are safe, record damage or an incident with photos and plain facts, and report it the way your employer and your jurisdiction require.

    3 min read