I wrote "Many college students work at the weekends." My colleague changed 'at' to 'during' = Many college students work during the weekends. Do you feel there is a difference, however subtle?
closed as off-topic by anongoodnurse, RyeɃreḁd, tchrist♦, choster, Mitch Apr 29 '14 at 22:22
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions that can be answered using commonly-available references are off-topic. A list of these references can be found here: List of general references" – anongoodnurse, RyeɃreḁd, tchrist
Yes, there is a significant difference.
Works at is usually used for a place (He works at the telephone company) or solving a particular problem (He's working away at it now).
Working on (3.a.) is used for times (he works on Mondays through Fridays; he also works on weekends sometimes) and problems (He's working on it now).
During is acceptable, as is They work weekends.