Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
and as required
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "and as required" is correct and usable in written English.
It can be used to indicate that something should be done or provided according to specific needs or conditions. Example: "Please submit the report by Friday, and as required, include all relevant data and analysis."
✓ Grammatically correct
Science
News & Media
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
56 human-written examples
Tuneful and (as required by the script) a bit bland, Michael Xavier supplies himself at one point in swimming trunks.
News & Media
He said the arrangement "was formally approved by the fees office and, as required by the rules, a formal written agreement was drawn up and lodged with them".
News & Media
In this, and in Webern's haunting Six Pieces for Orchestra, the LSO's playing was at once meticulous and, as required, explosive.
News & Media
Often manufacturers learn of a safety problem on their own and, as required by law, inform the agency of their plans for a recall.
News & Media
Italy, the younger line-up, called upon know-how to survive, with the captain Fabio Cannavaro commanding the final with another demonstration of defensive acumen and, as required, grit.
News & Media
In a statement, Honda said: "American Honda and American Honda Finance Corporation require its dealers to follow fair lending practices, as stated clearly in their dealer agreements and as required under applicable law.
News & Media
"I appear here as the ambassador of the Russian Federation to offer you our firm assurances that Mr. Borodin, if released, will appear in court where and as required," he said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
16 Complementary and as-required medications were excluded.
Inhaled corticosteroids as prophylaxis and 'as required' bronchodilator for symptomatic relief are established modalities for asthma management and prevention and the Commonwealth Caribbean Medical Research Council/Global Initiative for Asthma guidelines were adopted in the Caribbean in 1997 [ 4].
Dietitians will be asked to schedule patient consultations according to the recommendations of the clinical guidelines (weekly during radiotherapy, fortnightly for 6 weeks post-treatment, and 'as required' thereafter).
Science
[ 34, 35] We observed an evolution as the educational and monitoring role of the community teams gave way to self-management and 'as-required' contact with professionals.
Science
Expert writing Tips
Best practice
Use "and as required" to clearly indicate that an action, resource, or condition is contingent upon specific needs or circumstances, ensuring clarity and avoiding unnecessary implementation.
Common error
Avoid using "and as required" in sentences where the contingency is already clear. Simpler conjunctions like "and" or "but" might be more concise and effective.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "and as required" functions as a conjunctive adverbial phrase, linking two clauses and indicating a conditional relationship. It specifies that the action or condition in the second clause only applies under certain circumstances, based on a requirement or need. Ludwig AI confirms the phrase's correctness and usability.
Frequent in
Science
45%
News & Media
31%
Formal & Business
6%
Less common in
Wiki
4%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "and as required" is a commonly used and grammatically correct conjunctive phrase that indicates a conditional relationship, specifying that an action or condition applies only when necessary or under certain requirements. It is frequently found in science, news, and formal business contexts, denoting its broad applicability. While versatile, it’s important to ensure it adds clarity and precision, avoiding redundancy in simpler sentences. Based on the examples provided by Ludwig AI, the phrase is a reliable way to express conditional actions across various registers.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
and when necessary
Replaces 'required' with 'necessary', implying a condition-based action.
and if needed
Substitutes 'required' with 'needed', suggesting action based on a present need.
and as necessary
Uses 'necessary' instead of 'required', implying essential action.
and when appropriate
Replaces 'required' with 'appropriate', suggesting action based on suitability.
and as applicable
Substitutes 'required' with 'applicable', indicating action based on relevance.
and as the situation demands
Replaces the phrase with a more descriptive clause about situational needs.
and according to requirements
Rephrases to emphasize adherence to specific guidelines or rules.
and per the guidelines
Indicates that actions should comply with specified instructions.
and on a needs basis
Expresses that something is provided only when there is a demonstrated need.
and subject to demand
Implies that availability or action is dependent on the level of request or necessity.
FAQs
How can I use "and as required" in a sentence?
Use "and as required" to indicate that something should be done or provided only when necessary or under specific conditions. For example, "The technician will perform routine maintenance, and "as required", will also address any emergent issues."
What phrases are similar to "and as required"?
Similar phrases include "as needed", "when necessary", and "as necessary". The best choice depends on the specific context and the nuance you want to convey.
Is it redundant to say "and as required by law"?
While "and as required by law" can sometimes be redundant if the requirement is already implied, it can also be useful for emphasis or clarity, especially in legal or formal contexts. Consider the audience and the potential for ambiguity.
What is the difference between "and as required" and "and if necessary"?
"And as required" often suggests a pre-existing rule or guideline, while "and if necessary" implies a judgment call based on the current situation. "Please complete the standard forms, and "as required", submit additional documentation." vs. "Assess the patient's condition, and "if necessary", administer pain medication."
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested