Which one is correct?
"work" or "held up"?

Some examples from the web:

• Work, work, work, work, work, work, work, work.
• Field work is an important component of geology, although many subdisciplines incorporate laboratory work.
• Original work: a work not based upon another work.
• After theatre work in Manhattan, he moved into product and decorative design work.
• Greatly improve the work efficiency when busy with work. Printing with high speed.
• Team work to help the dream work.
• Leesman conducts global studies into how work environments support users in their work.
• The work programme or work plan may contain specific obligations regarding exploitation and dissemination.
• To guide its work, multiannual work programmes should be developed in consultation with Member States.
• other work directly connected with farm work:
• Domestic work is the largest sector of undeclared work in Europe.
• Specialist work is different from field work, believe me.
• Technique: Acrylic with frame with graphic work composing the work.
• She does also do other work, especially collage work.
• Other techniques are palette work and table work.
• Cathy Bokor, vice-president of Accurapid, stresses team work, another cardinal point for work in agencies.
• A regular work contract should be prepared for any short-term and seasonal work.
• I work work for the Patriarchs and Bishops of our area.
• This required some work to make the system work perfectly.
• Professor Parkes says work, work, work.

Some examples from the web:

• The project was held up by political infighting.
• Well, maybe it got held up in the holiday rush.
• I held up my end and broke whistler out.
• I think it's held up very well, all things considered.
• You held up your end of the deal.
• I believe they held up their part of the bargain.
• No, train's being held up.
• Look, I got held up in traffic.
• Besides, I held up my end.
• That's why your promotion was held up.
• No, they held up four fingers.
• For seven days I held up my severed head.
• We were held up outside the Waldorf-Astoria.
• I'm stuck, everything's held up.
• Sorry, I was held up.
• Because they've held up our businesses.
• The ship has held up pretty well over the years.
• She got held up, but she'll be here soon.
• And every mine around gets its payroll held up.
• The crowds are gathering and my motor was held up.