Legal drafting is often treated as a technical exercise in putting legal knowledge into words. In reality, good drafting requires much more. A well-drafted legal document must be clear, precise, logically structured, legally accurate and capable of producing the intended legal effect. A single ambiguous phrase, misplaced comma or undefined term can sometimes create consequences far beyond what the drafter originally intended.
Whether drafting a contract, legal notice, pleading, opinion, petition or corporate document, lawyers and law students should develop the habit of drafting with the reader, the law and the eventual consequences of the document in mind.
Here are 20 common legal drafting mistakes that every lawyer and law student should consciously avoid.
1. Writing Without Understanding the Purpose
One of the most fundamental mistakes is beginning to draft before understanding what the document is supposed to achieve.
Before writing, the drafter should identify the objective, parties involved, commercial or legal context, applicable law, risks and desired outcome. Drafting should be outcome-driven rather than simply clause-driven.
A contract, for example, should not merely contain standard clauses. Each provision should support the commercial arrangement and allocate rights, obligations and risks appropriately.
2. Using Unnecessarily Complicated Language
Legal writing does not become more sophisticated merely because it is difficult to understand.
Long sentences, excessive legalese and archaic expressions can make a document harder to interpret. Words such as “hereinafter”, “whereof”, “aforementioned” and “notwithstanding the foregoing” may sometimes be appropriate, but they should not be used simply because they sound legal.
The objective should be precision, not complexity.
If a simple sentence communicates the intended legal meaning accurately, there is little reason to replace it with a complicated one.
3. Ambiguous Language
Ambiguity is one of the biggest enemies of effective legal drafting.
Words such as “reasonable”, “promptly”, “substantial”, “material” or “best efforts” can create uncertainty if the document does not provide sufficient context.
This does not mean such terms should never be used. Instead, where the distinction matters, the drafter should define the relevant standard or provide objective parameters.
For example, instead of merely stating that payment must be made “promptly”, the contract could specify that payment must be made within a defined number of business days.
4. Failing to Define Important Terms
Definitions are not merely formalities. They create consistency throughout a document.
If a contract repeatedly uses terms such as “Services”, “Confidential Information”, “Business Day”, “Affiliate”, “Intellectual Property” or “Effective Date”, the drafter should consider whether those terms require precise definitions.
A poorly drafted definition can also create problems. Definitions should be neither unnecessarily broad nor narrower than the substantive provisions require.
5. Inconsistent Terminology
Using different words for the same concept can create unnecessary uncertainty.
For example, if one part of a contract refers to a party as the “Customer”, another as the “Client” and another as the “Purchaser”, the reader may wonder whether these terms refer to the same entity.
The same terminology should generally be maintained throughout the document unless different terms intentionally have different meanings.
Consistency is one of the simplest ways to improve drafting quality.
6. Overusing “And” and “Or”
The distinction between “and” and “or” can have significant legal consequences.
“And” generally connects cumulative requirements, whereas “or” can indicate alternatives. Using the wrong conjunction can therefore materially change the meaning of a provision.
Consider:
“The Company may terminate this Agreement if A and B occur.”
This may require both conditions to be satisfied.
Changing it to:
“The Company may terminate this Agreement if A or B occurs.”
may permit termination upon either condition.
Small words can create major legal consequences.
7. Drafting Excessively Long Sentences
A legal sentence containing several conditions, exceptions, qualifications and consequences can become difficult to interpret.
For example, a single sentence may attempt to establish an obligation, identify an exception, specify a time period, provide a condition precedent and then create a remedy.
Where appropriate, these concepts should be separated into sub-clauses.
Shorter sentences and logically organised provisions make documents easier to read, negotiate and enforce.
8. Poor Clause Structure
Good legal drafting depends heavily on structure.
A contract should generally move logically from definitions and interpretation to substantive obligations, commercial terms, representations, warranties, indemnities, limitations of liability, termination and boilerplate provisions, as appropriate.
Individual clauses should also have a logical internal structure.
Numbering, headings and sub-clauses are not merely aesthetic features. They help the reader understand how different provisions relate to one another.
9. Copy-Pasting Without Understanding
Templates are valuable drafting tools, but copying a precedent without understanding it is dangerous.
A clause drafted for one transaction may be inappropriate for another. References to parties, jurisdictions, legislation, defined terms, dates and commercial arrangements can easily remain unchanged.
A drafter should therefore ask:
Why is this clause here? What risk does it address? Does it work with the rest of this document?
If those questions cannot be answered, the clause probably should not be copied blindly.
10. Failing to Check Cross-References
Cross-references are a common source of drafting errors.
A clause may refer to “Clause 8.2” when the relevant provision is actually Clause 8.3. Similarly, a document may refer to an annexure that has been renamed or deleted during negotiations.
Every cross-reference should therefore be checked after revisions.
This becomes especially important in lengthy agreements where clauses are frequently inserted, deleted or renumbered.
11. Ignoring Defined Terms
Another common mistake is using a capitalised term that has not been defined—or using a defined term inconsistently.
For example, if “Confidential Information” is a defined term, subsequently referring to “confidential information” may create an unnecessary question about whether the drafter intended the defined concept or the ordinary meaning.
Defined terms should be used deliberately and consistently.
12. Using Boilerplate Without Assessing Its Relevance
Boilerplate clauses are often copied into almost every agreement: force majeure, notices, assignment, waiver, severability, entire agreement, governing law and dispute resolution, among others.
However, boilerplate is not automatically harmless.
For example, an assignment clause may need to distinguish between assignment to an affiliate and assignment to a competitor. A force majeure clause may need to reflect the specific nature of the transaction.
The drafter should review every boilerplate provision and ask whether it actually fits the transaction.
13. Failing to Consider the Opposing Interpretation
A strong drafter does not read a document only from their client’s perspective.
After completing the first draft, the lawyer should ask:
“If I represented the other side, how would I interpret this provision?”
This exercise often exposes ambiguity, loopholes and unintended consequences.
Effective drafting requires anticipating how the other party, a judge, arbitrator, regulator or future reader could interpret the document.
14. Neglecting Commercial Reality
Lawyers sometimes draft provisions that are legally elegant but commercially impractical.
A contract should reflect how the transaction will actually operate.
For example, an obligation requiring a party to provide information within one hour may look precise but may be impossible to comply with in practice.
Legal drafting must therefore combine legal analysis with an understanding of the client’s business, operational processes and commercial objectives.
15. Failing to Address Risk Allocation
Contracts are fundamentally about allocating rights, obligations and risks.
A drafter should consciously consider questions such as:
- Who bears the risk of delay?
- Who bears the risk of third-party claims?
- What happens if performance becomes impossible?
- What happens if confidential information is disclosed?
- Is there a liability cap?
- Are there exclusions from the cap?
- Who is responsible for regulatory compliance?
A document that fails to address foreseeable risks may leave the parties dependent on default legal rules or future litigation.
16. Confusing Representations, Warranties and Covenants
These concepts can have different legal and commercial implications.
A representation generally concerns a statement of existing or past fact. A warranty is commonly a contractual assurance, while a covenant or undertaking involves a promise to perform—or refrain from performing—a particular act.
The terminology should therefore be used carefully, particularly where breach triggers specific contractual remedies.
17. Poor Use of Punctuation
Punctuation can affect interpretation.
A misplaced comma, missing semicolon or poorly structured list can create uncertainty about whether a qualification applies to one item or an entire series of obligations.
This is particularly important in indemnities, exceptions, conditions and lists of rights or obligations.
Legal drafting requires grammatical accuracy because grammar can become part of legal interpretation.
18. Forgetting the “What If?” Questions
A good drafter thinks beyond the ideal scenario.
What happens if the other party does not perform?
What happens if performance is delayed?
What happens if the contract is terminated early?
What happens if a key employee leaves?
What happens if the law changes?
What happens if one provision becomes unenforceable?
These “what if?” questions help identify gaps in the document before they become disputes.
19. Not Proofreading the Final Version
Even excellent legal analysis can be undermined by basic errors.
Before finalising a document, the drafter should check:
- Names of parties
- Dates
- Addresses
- Definitions
- Clause numbering
- Cross-references
- Schedules and annexures
- Monetary amounts
- Percentages
- Spelling and grammar
- Governing law
- Jurisdiction or dispute-resolution provisions
- Signature blocks
A final proofread should ideally be done after substantive drafting is complete.
20. Drafting for the Present Instead of the Future
Perhaps the most important mistake is forgetting that a legal document may be read long after it is signed.
A contract may eventually be reviewed by a new management team, compliance officer, auditor, arbitrator, judge or another lawyer who was never involved in the original negotiations.
The document should therefore be capable of standing on its own.
Good drafting anticipates future questions and reduces dependence on oral explanations about what the parties “actually meant”.
Conclusion
Legal drafting is not simply about knowing the law. It is about translating legal and commercial objectives into precise language that can withstand scrutiny.
For law students, the best way to develop drafting skills is to draft regularly, read well-drafted agreements and pleadings, compare different precedents, identify why particular clauses have been written and actively look for ambiguity.
For practising lawyers, drafting should be approached as a risk-management exercise rather than merely a documentation exercise.
The strongest legal drafts are often not the longest or most complicated. They are the ones in which the reader can understand who must do what, when they must do it, what happens if they do not, and what legal consequences follow.
Ultimately, good drafting is about making the intended legal position difficult to misunderstand.
And that is perhaps the simplest test of a good legal drafter:
If the document can be understood correctly without the drafter being present to explain it, the drafting has probably done its job.
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