The four-year-old was partnered by Ryan Moore, who has made a remarkably quick recovery from a broken humerus and a broken thumb sustained in a fall at Glorious Goodwood on July 30.
Michael Stoute sent the duo over nine furlongs in company with his regular lead horse Confront and Group Three-placed Dux Scholar.
Confront led his workmates to the two-furlong marker when Moore picked up Workforce and pushed him on.
While Moore did not pick up his whip, he kept Workforce up to the task and finished around two lengths in front of Dux Scholar, who appeared well in himself too.
Stoute said: “That was a nice, strong piece of work on lovely ground and I’m satisfied with that.
“He doesn’t need to do much more as there’s only 12 days to go.”
Moore added: “It was fine. He seemed very well in himself and I was happy with him.”
Moore visited a specialist for further assessment of his arm on Monday and received a favourable verdict ahead of his Arc date on Sunday week.
Asked about his progress, the jockey said: “I’ll probably have a couple of rides before (the Arc), I’m not sure exactly but I won’t want to be riding too much.”
Stoute was repeating the same pattern as last year as he sent Workforce for a spin at Sandown before he went on to triumph at Longchamp.
Meanwhile, Frankel remains in fine health at Henry Cecil’s stable ahead of his final run of the season in next month’s Queen Elizabeth II Stakes at Ascot.
Positive reports of the extraordinary colt’s exercises on the gallops are nothing new, although he has replicated those efforts on the racecourse on eight occasions so far.
The most recent came in the Qipco Sussex Stakes at Goodwood in July, and Teddy Grimthorpe, racing manager to owner Prince Khalid Abdullah, said: “He worked well the other morning and Henry seems very pleased.
“The horse is in great shape and we couldn’t be more happy with him.”
Beaten Ladbrokes St Leger favourite Sea Moon is under consideration for the Breeders’ Cup Turf at Churchill Downs.
Michael Stoute’s colt, who was so impressive in the Great Voltigeur at York, was third at Doncaster and is likely to drop down in distance from now on.
He is still in the field for the Prix de l’Arc de Triomphe, but Teddy Grimthorpe, racing manager to owner Prince Khalid Abdullah, said: “Sea Moon came out of the Leger fine and we’ll see whether he has another run this season.
“It’s something we will discuss after the Arc. He stays in training next year and an option would be the Breeders’ Cup.”
Henry Cecil has a number of possible Abdullah runners for November’s American finale, and Grimthorpe said: “We’re very open in terms of what could and couldn’t go and we have to look at all the horses. Twice Over won’t go, but Midday could. She runs at Ascot next month and has the option of the Filly & Mare Turf or the mile and a half (Turf). Sea Moon would just have the mile and a half.
“Timepiece is going to run this weekend in the Sun Chariot. We’ll see how she goes, but I wouldn’t think the Breeders’ Cup is in Henry’s mind at the moment.”
Meeznah will not be heading to Australia for a crack at the Emirates Melbourne Cup.
Connections of the dual Group winner have ruled out the Flemington showpiece from the four-year-old filly’s list of options.
However, trainer David Lanigan and owners Saif Ali and Saeed H Altayer still have to decide between races at Longchamp during Arc weekend, Champions Day at Ascot and the Breeders’ Cup at Churchill Downs.
lSEANIE might have one more run this season after scooping a huge pot at Fairyhouse on Saturday.
David Marnane’s youngster sprang a 40-1 surprise in the Tattersalls Ireland Super Auction Sale Stakes, to land £63,000 for connections.
“We’ve always held him in high regard and he obviously improved a lot off his first run at Tipperary,” said Marnane.
“He’d shown plenty at home without us having done very much with him and we always thought he’d make into a lovely three-year-old.
“It was good he got into the race on Saturday and good that he won it.
“He had a bad draw and a lot of things were against us, but he was still the best horse on the day and we’re delighted with him.
“He’s come out of the race great so far. We’re going to sit down next week and figure out what we are going to do with him.
“I haven’t any definite plans. We might put him away for the year or he might have one more run.
“Maybe just for experience, we might like to see him out one more time.”
JOCKEY Hayley Turner, who broke her left ankle in a fall at Bath last month, is set to miss the rest of the year, but is determined to bounce back “hungrier than ever” in 2012.
Turner, who hit the headlines with Group 1 sprint wins on Dream Ahead and Margot Did this summer, has had her cast taken off, although she has had to revise her comeback plans.