I can't think of a single word, except maybe hours. People talk about the hours they worked on something. "How many hours do you have in this week?"
I saw that one time-tracking site called time spent on a task "active time," and another called it "tasktime" (one word, but coined, I think). In an office setting, it could also be called "billable time" or "billable hours."
Answer from JLG on Stack ExchangeVideos
What is the difference between "spent some time" and "took some time"?
Is it correct to say "I spend some time" instead of "I spent some time"?
How can I use "spent some time" in a sentence?
I can't think of a single word, except maybe hours. People talk about the hours they worked on something. "How many hours do you have in this week?"
I saw that one time-tracking site called time spent on a task "active time," and another called it "tasktime" (one word, but coined, I think). In an office setting, it could also be called "billable time" or "billable hours."
I did my stint in the kitchen yesterday.
a period of time spent at a particular activity