Related Clues:
- Hit record following Sinatra's number one
- Hit hard — hard work
- Labour's reverse of fortune enthralling one
- Fatiguing labor
- Work incessantly
- Laborious process
- Uphill climb, say
- Laborious Warship song?
- Hard work of making it
- Work hard for career
- Labor of making it
- Work in small room -- waste of energy and time
- Work like the dickens
- Left halfway through really good work
- Rough going