Any drawbacks/consequences from leaving a lithium ion tool battery on the charger for extended periods of time, like possibly weeks?

Bought a cordless screwdriver to keep in my office so I wouldn't have to go get my tools to do stupid little fix-it shit, but it gets used very infrequently. The battery might sit on the charger for weeks at a time before getting used. Would this cause any problems for the battery long term? Like constantly monitoring the battery charge lowering life span or something?