Missing their baby's first word when at work is a reality for more than one in twenty working mothers, disclosed a study.
A Tesco study revealed that one in four mums has missed out on key moments in her child's life, and almost 23 per cent blamed it on their return to work.
The study revealed 38 per cent of mums were upset about missing out but nearly twice as many felt guilty about it.
The first school sports day is the milestone mums are most likely to skip with almost one in 10 failing to make it, the study found.
"For a mum, witnessing the first time your baby smiles, speaks or walks is one of the most rewarding moments of motherhood," the Daily Express quoted Jenna Bannerman, Tesco Baby and Toddler Club spokeswoman as saying.
"Nothing can make a mum feel more proud of their offspring than watching as they reach each -childhood milestone," she added.
Bannerman said: "It's not easy for many mums to be there all of the time and it's inevitable they will miss out on some milestones."