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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
will be on call
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "will be on call" is correct and usable in written English.
It can be used to indicate that someone will be available to respond to calls or requests, typically in a work or emergency context. Example: "During the holiday season, I will be on call to assist with any urgent customer inquiries."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
is already finalized
will be considered
has been transported
will present
is on track to be finalized
has been honored
had been completed
has now ended
has successfully preserved
will be revised
is going to be presented
has been deteriorated
will be permitted
will be handed in
has been redeployed
is arranged for
has been executed
will be disseminating
will be followed
has come into effect
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
34 human-written examples
Most of the part-time workers will be "on call". This means that they will agree to respond within an hour to a call to report for duty.
Science
An after-hours and weekend service is offered by one physiotherapist who will be on call on a rotational basis.
Science
At least one of the people will be on call 24 hours a day as a resource for customers that encounter difficulty.
Science
Lawyers will be on call.
News & Media
The chiropractor will be on call at the Garden.
News & Media
In Milwaukee, lawyers from the district attorney's office will be on call if tensions get out of hand.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
26 human-written examples
All our aircraft will be on-call 24/7.
News & Media
In three weeks, he'll be on call for a nearby hospital to counsel people who have just been revived from an opioid overdose. .
News & Media
Known as a personal liaison manager, these people will be on 24/7 call to provide assistance for everything from troubleshooting engine problems to arranging concert tickets.
News & Media
I know I will be on the call on Tuesday, how about you? www.upwardspiral2011.org.upwardspiral2011.org
News & Media
A maximum of ten people will be on each call for two hours, and the cost will be $99.
News & Media
Expert writing Tips
Best practice
Use "will be on call" to clearly indicate a period of availability for immediate response, such as in emergency services or customer support. This is very different from saying that somebody "will be available" which doesn't imply immediate response.
Common error
Avoid using "will be on call" when you simply mean someone is generally available. "On call" implies a specific duty to respond promptly, not just general accessibility. For example, a doctor "will be on call", but your account manager is only "available".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "will be on call" functions as a predicate adjective phrase within a sentence, describing the state or condition of a subject. Ludwig's AI identifies it as indicating availability and readiness to respond to calls or requests.
Frequent in
News & Media
40%
Science
30%
Formal & Business
15%
Less common in
Wiki
5%
Academia
5%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "will be on call" is a common and grammatically correct way to express availability and readiness to respond to requests or emergencies. As Ludwig's AI confirms, it's often used in news, science, and formal business contexts. While it can be used in many situations, it is important to remember that it implies active readiness and availability, and is not simply a synonym for “available”. Alternatives like "will be available" or will be on standby may be more appropriate depending on the specific situation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
will be on standby
Implies readiness to respond if needed, typically in an emergency.
will be available
Focuses on general availability, less specific than being 'on call'.
will be available for contact
Similar to 'reachable' but more formal.
will be reachable
Emphasizes the ability to be contacted, less about immediate action.
will be accessible
Focuses on the ease of getting in touch.
will be ready for duty
Indicates preparedness to perform assigned tasks.
will be standing by
Suggests a state of readiness and anticipation.
will be ready to assist
Highlights the willingness to help when contacted.
will be at the ready
Similar to 'standing by', implying preparedness.
will be attending
Suggests someone is present and participating
FAQs
How is "will be on call" typically used in a sentence?
The phrase "will be on call" indicates that someone is available and prepared to respond to requests or emergencies, often outside of regular working hours. For example, "The IT support team "will be on call" over the weekend to address any system outages."
What's a more formal alternative to "will be on call"?
A more formal alternative could be "will be available for duty", which implies a structured readiness to perform tasks when required. However, "will be on call" is acceptable in most professional contexts.
Is it correct to say "will be on call 24/7"?
Yes, saying "will be on call 24/7" emphasizes that someone is available around the clock, every day of the week. This is commonly used in contexts like emergency services or critical IT infrastructure support.
What's the difference between "will be on call" and "will be on standby"?
"Will be on call" suggests an expectation to actively respond to requests or emergencies, while "will be on standby" implies a state of readiness, but not necessarily an active expectation of immediate action. Standby often suggests awaiting further instructions or a specific event.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested